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Gauge (firearms) - Wikipedia
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href="https://ca.wikipedia.org/wiki/Calibre_d%27un_cartutx" title="Calibre d'un cartutx – Catalan" lang="ca" hreflang="ca" data-title="Calibre d'un cartutx" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Calibre_de_un_cartucho" title="Calibre de un cartucho – Spanish" lang="es" hreflang="es" data-title="Calibre de un cartucho" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%AF%DB%8C%D8%AC" title="گیج – Persian" lang="fa" hreflang="fa" data-title="گیج" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Tolok" title="Tolok – Indonesian" lang="id" hreflang="id" data-title="Tolok" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Gauge_(unit%C3%A0_di_misura)" title="Gauge (unità di misura) – Italian" lang="it" hreflang="it" data-title="Gauge (unità di misura)" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/G%C3%A1ugio" title="Gáugio – Portuguese" lang="pt" hreflang="pt" data-title="Gáugio" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-simple 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href="/w/index.php?title=Gauge_(bore_diameter)&redirect=no" class="mw-redirect" title="Gauge (bore diameter)">Gauge (bore diameter)</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Internal diameter of the barrel of a firearm</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="/wiki/Caliber" title="Caliber">caliber</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox" style="width:25.5em;border-spacing:2px;"><tbody><tr><th colspan="2" class="infobox-above hproduct" style="font-size: 110%; background-color:#C3D6EF;color:inherit;"><span class="fn">Gauge</span></th></tr><tr><td colspan="2" class="infobox-image" style="border-bottom: 1px solid #aaa"><span typeof="mw:File"><a href="/wiki/File:Shotshell_001.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Shotshell_001.jpg/250px-Shotshell_001.jpg" decoding="async" width="250" height="192" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Shotshell_001.jpg/375px-Shotshell_001.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Shotshell_001.jpg/500px-Shotshell_001.jpg 2x" data-file-width="1455" data-file-height="1119" /></a></span><div class="infobox-caption">From left to right; a <a href="/wiki/.45_ACP" title=".45 ACP">.45 ACP</a> cartridge, a <a href="/wiki/.410_bore" title=".410 bore">.410 bore</a> shotshell, a <a href="/wiki/20-gauge_shotgun" title="20-gauge shotgun">20-gauge</a> shotshell, and a 12-gauge shotshell</div></td></tr><tr><th scope="row" class="infobox-label" style="padding-right: 1em">Type</th><td class="infobox-data"><a href="/wiki/Shotgun" title="Shotgun">Shotgun</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right: 1em">Place of origin</th><td class="infobox-data">Various</td></tr></tbody></table> <p>The <b>gauge</b> (in American English or more commonly referred to as <b>bore</b> in British English) of a <a href="/wiki/Firearm" title="Firearm">firearm</a> is a unit of measurement used to express the inner diameter (bore diameter) of the <a href="/wiki/Gun_barrel" title="Gun barrel">barrel</a>. </p><p>Gauge is determined from the weight of a solid sphere of lead that will fit the bore of the firearm and is expressed as the <a href="/wiki/Multiplicative_inverse" title="Multiplicative inverse">multiplicative inverse</a> of the sphere's weight as a fraction of a pound, e.g., a one-twelfth pound lead ball fits a 12-gauge bore. Therefore with a 12-gauge, it would take 12 balls of lead of the same size as the 12 gauge shotgun's inner bore diameter to weigh 1 pound (454 grams).<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The term is related to the measurement of <a href="/wiki/Cannon" title="Cannon">cannons</a>, which were also measured by the weight of their iron <a href="/wiki/Round_shot" title="Round shot">round shot</a>; an <a href="/wiki/Demi-culverin" title="Demi-culverin">eight-pounder</a> would fire an 8 lb (3.6 kg) ball. </p><p>Gauge is commonly used today in reference to <a href="/wiki/Shotgun" title="Shotgun">shotguns</a>, though historically it was also used in large <a href="/wiki/Double_rifle" title="Double rifle">double rifles</a>, which were made in sizes up to <a href="/wiki/2_bore" title="2 bore">2 bore</a> during their heyday in the 1880s, being originally loaded with black powder cartridges. These very large rifles, called "<a href="/wiki/Elephant_gun" title="Elephant gun">elephant guns</a>", were intended for use primarily in Africa and Asia for hunting large dangerous game. </p><p>Gauge is commonly abbreviated as "ga.", "ga", or "G". </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Calculating_gauge">Calculating gauge</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gauge_(firearms)&action=edit&section=1" title="Edit section: Calculating gauge"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>An <i>n</i>-gauge diameter means that a ball of lead (density 11.34 g/cm<sup>3</sup> or 0.4097 lb/in<sup>3</sup>) with that diameter has a mass equal to <style data-mw-deduplicate="TemplateStyles:r1214402035">.mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0.1em 0.1em}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">n</span></span>⁠</span> part of the mass of the <a href="/wiki/International_avoirdupois_pound" class="mw-redirect" title="International avoirdupois pound">international avoirdupois pound</a> (approx. 454 grams), that is, that <i>n</i> such lead balls could be cast from a pound weight of lead. Therefore, an <i>n</i>-gauge shotgun or <i>n</i>-bore rifle has a bore diameter (in inches) of approximately </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-display mwe-math-mathml-a11y" style="display: none;"><math display="block" xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle d_{n}=2{\sqrt[{3}]{{\frac {3}{4\pi }}{\frac {1\mathrm {~lb} /n}{0.4097\mathrm {~lb/in^{3}} }}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msub> <mo>=</mo> <mn>2</mn> <mrow class="MJX-TeXAtom-ORD"> <mroot> <mrow> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>3</mn> <mrow> <mn>4</mn> <mi>π<!-- π --></mi> </mrow> </mfrac> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mn>1</mn> <mrow class="MJX-TeXAtom-ORD"> <mtext> </mtext> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">b</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mi>n</mi> </mrow> <mrow> <mn>0.4097</mn> <mrow class="MJX-TeXAtom-ORD"> <mtext> </mtext> <mi mathvariant="normal">l</mi> <mi mathvariant="normal">b</mi> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mi mathvariant="normal">i</mi> <msup> <mi mathvariant="normal">n</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msup> </mrow> </mrow> </mfrac> </mrow> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </mroot> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle d_{n}=2{\sqrt[{3}]{{\frac {3}{4\pi }}{\frac {1\mathrm {~lb} /n}{0.4097\mathrm {~lb/in^{3}} }}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/0928ab47102d9f4aa3b8b3d53afaa2c4f6b07b27" class="mwe-math-fallback-image-display mw-invert skin-invert" aria-hidden="true" style="vertical-align: -3.171ex; width:26.314ex; height:7.509ex;" alt="{\displaystyle d_{n}=2{\sqrt[{3}]{{\frac {3}{4\pi }}{\frac {1\mathrm {~lb} /n}{0.4097\mathrm {~lb/in^{3}} }}}}}"></span> </p><p>Explanation: </p> <ul><li>Divide 1 pound by <i>n</i> to find the mass of each one of the balls</li> <li>Divide it by 0.4097 lb/in<sup>3</sup> (density of lead) to find the volume of each ball</li> <li>Multiply it by <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">3</span><span class="sr-only">/</span><span class="den">4</span></span>⁠</span> and divide it by <span class="texhtml mvar" style="font-style:italic;">π</span>, then find its <a href="/wiki/Cube_root" title="Cube root">cube root</a> (rearranged from the <a href="/wiki/Volume_of_a_sphere" class="mw-redirect" title="Volume of a sphere">volume of a sphere</a> equation) to find the radius of each ball</li> <li>Multiply it by 2 to change from radius to diameter</li></ul> <p>This simplifies to the following formula for the internal diameter of the barrel of an <i>n</i>-gauge shotgun: </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-display mwe-math-mathml-a11y" style="display: none;"><math display="block" xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle d_{n}=1.67/{\sqrt[{3}]{n}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msub> <mo>=</mo> <mn>1.67</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mroot> <mi>n</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </mroot> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle d_{n}=1.67/{\sqrt[{3}]{n}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/1b8181709e4daca3d06a5eb9f923070761e44f2b" class="mwe-math-fallback-image-display mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:14.153ex; height:3.009ex;" alt="{\displaystyle d_{n}=1.67/{\sqrt[{3}]{n}}}"></span> </p><p>in inches, or </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-display mwe-math-mathml-a11y" style="display: none;"><math display="block" xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle d_{n}=42.4/{\sqrt[{3}]{n}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msub> <mo>=</mo> <mn>42.4</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mroot> <mi>n</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </mroot> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle d_{n}=42.4/{\sqrt[{3}]{n}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/2310a134d924bfd00fcb9e83622fc4ef4e2b4b55" class="mwe-math-fallback-image-display mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:14.153ex; height:3.009ex;" alt="{\displaystyle d_{n}=42.4/{\sqrt[{3}]{n}}}"></span> </p><p>in millimeters. </p><p>Likewise, given the diameter in inches, the gauge is <span class="mwe-math-element"><span class="mwe-math-mathml-display mwe-math-mathml-a11y" style="display: none;"><math display="block" xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n=4.66/d_{n}^{3}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>n</mi> <mo>=</mo> <mn>4.66</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>/</mo> </mrow> <msubsup> <mi>d</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>3</mn> </mrow> </msubsup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle n=4.66/d_{n}^{3}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d293633db7ce9bab8be193fab8c69a4b065e3caa" class="mwe-math-fallback-image-display mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:12.217ex; height:3.009ex;" alt="{\displaystyle n=4.66/d_{n}^{3}}"></span> </p><p>The gauge of firearms is determined by: 1 pound/gauge = weight of lead sphere. <a href="/wiki/Caliber" title="Caliber">Caliber</a> of the bore is then measured.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citing_sources#What_information_to_include" title="Wikipedia:Citing sources"><span title="A complete citation is needed. (October 2024)">full citation needed</span></a></i>]</sup> </p> <table class="wikitable" style="margin-left:auto;margin-right:auto;"> <tbody><tr> <th colspan="2">1 Pound / gauge = weight of lead sphere</th> <th colspan="2">Diameter of bore is then measured </th></tr> <tr> <th>gauge</th> <th>pounds</th> <th>mm</th> <th>inches </th></tr> <tr> <td>0.25</td> <td>4</td> <td>67.34</td> <td>2.651 </td></tr> <tr> <td>0.5</td> <td>2</td> <td>53.45</td> <td>2.103 </td></tr> <tr> <td>0.75</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠1<span class="sr-only">+</span><span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">3</span></span>⁠</span></td> <td>46.70</td> <td>1.838 </td></tr> <tr> <td>1</td> <td>1</td> <td>42.42</td> <td>1.669 </td></tr> <tr> <td>1.5</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">2</span><span class="sr-only">/</span><span class="den">3</span></span>⁠</span></td> <td>37.05</td> <td>1.459 </td></tr> <tr> <td>2</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">2</span></span>⁠</span></td> <td>33.67</td> <td>1.326 </td></tr> <tr> <td>3</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">3</span></span>⁠</span></td> <td>29.41</td> <td>1.158 </td></tr> <tr> <td>4</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">4</span></span>⁠</span></td> <td>26.72</td> <td>1.052 </td></tr> <tr> <td>5</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">5</span></span>⁠</span></td> <td>24.80</td> <td>0.976 </td></tr> <tr> <td>6</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">6</span></span>⁠</span></td> <td>23.35</td> <td>0.919 </td></tr> <tr> <td>6.278</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">6.278</span></span>⁠</span></td> <td>23.00</td> <td>0.906 </td></tr> <tr> <td>7</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">7</span></span>⁠</span></td> <td>22.18</td> <td>0.873 </td></tr> <tr> <td>8</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">8</span></span>⁠</span></td> <td>21.21</td> <td>0.835 </td></tr> <tr> <td>9</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">9</span></span>⁠</span></td> <td>20.39</td> <td>0.803 </td></tr> <tr> <td>10</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">10</span></span>⁠</span></td> <td>19.69</td> <td>0.775 </td></tr> <tr> <td>11</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">11</span></span>⁠</span></td> <td>19.07</td> <td>0.751 </td></tr> <tr> <td>12</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">12</span></span>⁠</span></td> <td>18.53</td> <td>0.729 </td></tr> <tr> <td>13</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">13</span></span>⁠</span></td> <td>18.04</td> <td>0.710 </td></tr> <tr> <td>14</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">14</span></span>⁠</span></td> <td>17.60</td> <td>0.693 </td></tr> <tr> <td>15</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">15</span></span>⁠</span></td> <td>17.21</td> <td>0.677 </td></tr> <tr> <td>16</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">16</span></span>⁠</span></td> <td>16.83</td> <td>0.663 </td></tr> <tr> <td>17</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">17</span></span>⁠</span></td> <td>16.50</td> <td>0.650 </td></tr> <tr> <td>18</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">18</span></span>⁠</span></td> <td>16.19</td> <td>0.637 </td></tr> <tr> <td>19</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">19</span></span>⁠</span></td> <td>15.90</td> <td>0.626 </td></tr> <tr> <td>20</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">20</span></span>⁠</span></td> <td>15.63</td> <td>0.615 </td></tr> <tr> <td>21</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">21</span></span>⁠</span></td> <td>15.37</td> <td>0.605 </td></tr> <tr> <td>22</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">22</span></span>⁠</span></td> <td>15.13</td> <td>0.596 </td></tr> <tr> <td>23</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">23</span></span>⁠</span></td> <td>14.91</td> <td>0.587 </td></tr> <tr> <td>24</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">24</span></span>⁠</span></td> <td>14.70</td> <td>0.579 </td></tr> <tr> <td>25</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">25</span></span>⁠</span></td> <td>14.50</td> <td>0.571 </td></tr> <tr> <td>26</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">26</span></span>⁠</span></td> <td>14.31</td> <td>0.564 </td></tr> <tr> <td>27</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">27</span></span>⁠</span></td> <td>14.12</td> <td>0.556 </td></tr> <tr> <td>28</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">28</span></span>⁠</span></td> <td>13.97</td> <td>0.550 </td></tr> <tr> <td>29</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">29</span></span>⁠</span></td> <td>13.79</td> <td>0.543 </td></tr> <tr> <td>30</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">30</span></span>⁠</span></td> <td>13.64</td> <td>0.537 </td></tr> <tr> <td>31</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">31</span></span>⁠</span></td> <td>13.49</td> <td>0.531 </td></tr> <tr> <td>32</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">32</span></span>⁠</span></td> <td>13.36</td> <td>0.526 </td></tr> <tr> <td>33</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">33</span></span>⁠</span></td> <td>13.20</td> <td>0.520 </td></tr> <tr> <td>34</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">34</span></span>⁠</span></td> <td>13.08</td> <td>0.515 </td></tr> <tr> <td>35</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">35</span></span>⁠</span></td> <td>12.95</td> <td>0.510 </td></tr> <tr> <td>36</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">36</span></span>⁠</span></td> <td>12.85</td> <td>0.506 </td></tr> <tr> <td>37</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">37</span></span>⁠</span></td> <td>12.73</td> <td>0.501 </td></tr> <tr> <td>38</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">38</span></span>⁠</span></td> <td>12.62</td> <td>0.497 </td></tr> <tr> <td>39</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">39</span></span>⁠</span></td> <td>12.50</td> <td>0.492 </td></tr> <tr> <td>40</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">40</span></span>⁠</span></td> <td>12.40</td> <td>0.488 </td></tr> <tr> <td>41</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">41</span></span>⁠</span></td> <td>12.30</td> <td>0.484 </td></tr> <tr> <td>42</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">42</span></span>⁠</span></td> <td>12.19</td> <td>0.480 </td></tr> <tr> <td>43</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">43</span></span>⁠</span></td> <td>12.16</td> <td>0.477 </td></tr> <tr> <td>44</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">44</span></span>⁠</span></td> <td>12.01</td> <td>0.473 </td></tr> <tr> <td>45</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">45</span></span>⁠</span></td> <td>11.91</td> <td>0.469 </td></tr> <tr> <td>46</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">46</span></span>⁠</span></td> <td>11.84</td> <td>0.466 </td></tr> <tr> <td>47</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">47</span></span>⁠</span></td> <td>11.80</td> <td>0.463 </td></tr> <tr> <td>48</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">48</span></span>⁠</span></td> <td>11.66</td> <td>0.459 </td></tr> <tr> <td>49</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">49</span></span>⁠</span></td> <td>11.58</td> <td>0.456 </td></tr> <tr> <td>50</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">50</span></span>⁠</span></td> <td>11.51</td> <td>0.453 </td></tr> <tr> <td>51</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">51</span></span>⁠</span></td> <td>11.43</td> <td>0.450 </td></tr> <tr> <td>52</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">52</span></span>⁠</span></td> <td>11.35</td> <td>0.447 </td></tr> <tr> <td>53</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">53</span></span>⁠</span></td> <td>11.30</td> <td>0.445 </td></tr> <tr> <td>54</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">54</span></span>⁠</span></td> <td>11.23</td> <td>0.442 </td></tr> <tr> <td>55</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">55</span></span>⁠</span></td> <td>11.15</td> <td>0.439 </td></tr> <tr> <td>56</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">56</span></span>⁠</span></td> <td>11.07</td> <td>0.436 </td></tr> <tr> <td>57</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">57</span></span>⁠</span></td> <td>11.02</td> <td>0.434 </td></tr> <tr> <td>58</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">58</span></span>⁠</span></td> <td>10.95</td> <td>0.431 </td></tr> <tr> <td>59</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">59</span></span>⁠</span></td> <td>10.90</td> <td>0.429 </td></tr> <tr> <td>60</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">60</span></span>⁠</span></td> <td>10.85</td> <td>0.427 </td></tr> <tr> <td>61</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">61</span></span>⁠</span></td> <td>10.77</td> <td>0.424 </td></tr> <tr> <td>62</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">62</span></span>⁠</span></td> <td>10.72</td> <td>0.422 </td></tr> <tr> <td>63</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">63</span></span>⁠</span></td> <td>10.67</td> <td>0.420 </td></tr> <tr> <td>64</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">64</span></span>⁠</span></td> <td>10.59</td> <td>0.417 </td></tr> <tr> <td>65</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">65</span></span>⁠</span></td> <td>10.54</td> <td>0.415 </td></tr> <tr> <td>66</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">66</span></span>⁠</span></td> <td>10.49</td> <td>0.413 </td></tr> <tr> <td>67</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">67</span></span>⁠</span></td> <td>10.44</td> <td>0.411 </td></tr> <tr> <td>67.62</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">67.62</span></span>⁠</span></td> <td>10.41</td> <td>0.410 </td></tr> <tr> <td>68</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">68</span></span>⁠</span></td> <td>10.40</td> <td>0.409 </td></tr> <tr> <td>69</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">69</span></span>⁠</span></td> <td>10.34</td> <td>0.407 </td></tr> <tr> <td>70</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">70</span></span>⁠</span></td> <td>10.29</td> <td>0.405 </td></tr> <tr> <td>71</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">71</span></span>⁠</span></td> <td>10.24</td> <td>0.403 </td></tr> <tr> <td>72</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">72</span></span>⁠</span></td> <td>10.20</td> <td>0.401 </td></tr> <tr> <td>73</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">73</span></span>⁠</span></td> <td>10.16</td> <td>0.400 </td></tr> <tr> <td>74</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">74</span></span>⁠</span></td> <td>10.10</td> <td>0.3978 </td></tr> <tr> <td>75</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">75</span></span>⁠</span></td> <td>10.05</td> <td>0.3960 </td></tr> <tr> <td>76</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">76</span></span>⁠</span></td> <td>10.01</td> <td>0.3942 </td></tr> <tr> <td>77</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">77</span></span>⁠</span></td> <td>9.97</td> <td>0.3925 </td></tr> <tr> <td>78</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">78</span></span>⁠</span></td> <td>9.93</td> <td>0.3908 </td></tr> <tr> <td>79</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">79</span></span>⁠</span></td> <td>9.86</td> <td>0.3892 </td></tr> <tr> <td>80</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">80</span></span>⁠</span></td> <td>9.84</td> <td>0.3876 </td></tr> <tr> <td>81</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">81</span></span>⁠</span></td> <td>9.80</td> <td>0.3860 </td></tr> <tr> <td>82</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">82</span></span>⁠</span></td> <td>9.76</td> <td>0.3844 </td></tr> <tr> <td>83</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">83</span></span>⁠</span></td> <td>9.72</td> <td>0.3828 </td></tr> <tr> <td>84</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">84</span></span>⁠</span></td> <td>9.67</td> <td>0.3813 </td></tr> <tr> <td>85</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">85</span></span>⁠</span></td> <td>9.65</td> <td>0.3798 </td></tr> <tr> <td>86</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">86</span></span>⁠</span></td> <td>9.61</td> <td>0.3783 </td></tr> <tr> <td>87</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">87</span></span>⁠</span></td> <td>9.57</td> <td>0.3769 </td></tr> <tr> <td>88</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">88</span></span>⁠</span></td> <td>9.54</td> <td>0.3754 </td></tr> <tr> <td>89</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">89</span></span>⁠</span></td> <td>9.50</td> <td>0.3740 </td></tr> <tr> <td>90</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">90</span></span>⁠</span></td> <td>9.46</td> <td>0.3726 </td></tr> <tr> <td>91</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">91</span></span>⁠</span></td> <td>9.43</td> <td>0.3713 </td></tr> <tr> <td>92</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">92</span></span>⁠</span></td> <td>9.40</td> <td>0.3699 </td></tr> <tr> <td>93</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">93</span></span>⁠</span></td> <td>9.36</td> <td>0.3686 </td></tr> <tr> <td>94</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">94</span></span>⁠</span></td> <td>9.33</td> <td>0.3673 </td></tr> <tr> <td>95</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">95</span></span>⁠</span></td> <td>9.30</td> <td>0.3660 </td></tr> <tr> <td>96</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">96</span></span>⁠</span></td> <td>9.26</td> <td>0.3647 </td></tr> <tr> <td>97</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">97</span></span>⁠</span></td> <td>9.23</td> <td>0.3634 </td></tr> <tr> <td>98</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">98</span></span>⁠</span></td> <td>9.20</td> <td>0.3622 </td></tr> <tr> <td>99</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">99</span></span>⁠</span></td> <td>9.17</td> <td>0.3610 </td></tr> <tr> <td>100</td> <td><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">100</span></span>⁠</span></td> <td>9.14</td> <td>0.3598 </td></tr> </tbody></table> <div class="mw-heading mw-heading2"><h2 id="Bore_sizing">Bore sizing</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gauge_(firearms)&action=edit&section=2" title="Edit section: Bore sizing"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Since shotguns were not originally intended to fire solid projectiles, but rather a compressible mass of shot, the actual diameter of the bore can vary. The fact that most shotgun bores are not cylindrical also causes deviations from the ideal bore diameter. </p><p>The chamber of the gun is larger, to accommodate the thickness of the shotshell walls, and a "forcing cone" in front of the chamber reduces the diameter down to the bore diameter. The forcing cone can be as short as a fraction of an inch, or as long as a few inches on some guns. At the muzzle end of the barrel, the <a href="/wiki/Choke_tube" class="mw-redirect" title="Choke tube">choke</a> can constrict the bore even further, so measuring the bore diameter of a shotgun is not a simple process, as it must be done away from either end. </p><p>Shotgun bores are commonly "overbored" or "backbored", meaning that most of the bore (from the forcing cone to the choke) is slightly larger than the value given by the formula. This is claimed to reduce felt recoil and improve patterning. The recoil reduction is due to the larger bore producing a slower acceleration of the shot, and the patterning improvements are due to the larger muzzle diameter for the same choke constriction, which results in less shot deformation. A 12-gauge shotgun, nominally 18.5 mm (0.73 in), can range from a tight 18 mm (0.71 in) to an extreme overbore of 20 mm (0.79 in). Some also claim an increased velocity with the overbored barrels, up to 15 m/s (49 ft/s), which is due to the larger swept volume of the overbored barrel. Once only found in expensive custom shotguns, overbored barrels are now becoming common in mass-marketed guns. Aftermarket backboring is also commonly done to reduce the weight of the barrel and move the <a href="/wiki/Center_of_mass" title="Center of mass">center of mass</a> backward for a better balance. Factory overbored barrels generally are made with a larger outside diameter, and will not have this reduction in weight—though the factory barrels will be tougher, since they have a normal barrel wall thickness. </p><p>Firing <a href="/wiki/Slug_(projectile)" title="Slug (projectile)">slugs</a> from overbored barrels can result in very inconsistent accuracy, as the slug may be incapable of <a href="/wiki/Obturate" class="mw-redirect" title="Obturate">obturating</a> to fill the oversized bore. </p> <div class="mw-heading mw-heading2"><h2 id="Gauges_in_use">Gauges in use</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gauge_(firearms)&action=edit&section=3" title="Edit section: Gauges in use"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Shotgun#Gauge" title="Shotgun">Shotgun § Gauge</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Shotgun_shell_comparison.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Shotgun_shell_comparison.jpg/220px-Shotgun_shell_comparison.jpg" decoding="async" width="220" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Shotgun_shell_comparison.jpg/330px-Shotgun_shell_comparison.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/6/6b/Shotgun_shell_comparison.jpg 2x" data-file-width="419" data-file-height="319" /></a><figcaption>left-to-right: .410 bore, 28 gauge, 20 gauge, and 12 gauge shotgun shells</figcaption></figure> <p>The six most common shotgun gauges, in descending order of size, are the 10 gauge, 12 gauge, 16 gauge, <a href="/wiki/20_gauge" class="mw-redirect" title="20 gauge">20 gauge</a>, 28 gauge, and <a href="/wiki/.410_bore" title=".410 bore">.410 bore</a>.<sup id="cite_ref-Outly_3-0" class="reference"><a href="#cite_note-Outly-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> By far the most popular is the 12 gauge,<sup id="cite_ref-Outly_3-1" class="reference"><a href="#cite_note-Outly-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> particularly in the United States.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The 20-gauge shotgun is the next most popular size, being favored by shooters uncomfortable with the weight and recoil of a 12-gauge gun, and is popular for <a href="/wiki/Upland_hunting" title="Upland hunting">upland game hunting</a>. The next most popular sizes are the .410 bore and the 28 gauge. The least popular sizes are the 10 gauge and the 16 gauge, while far less common than the other four gauges, they are still commercially available.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2023)">citation needed</span></a></i>]</sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Shotguns and shells exceeding 10 gauge, such as the 8 gauge, 6 gauge, 4 gauge, and 2 gauge are historically important in the United Kingdom and elsewhere in <a href="/wiki/Mainland_Europe" class="mw-redirect" title="Mainland Europe">mainland Europe</a>. Today, they are rarely manufactured. These shells are usually <a href="/wiki/Black_powder" class="mw-redirect" title="Black powder">black powder</a> paper or brass cartridges, as opposed to modern <a href="/wiki/Smokeless_powder" title="Smokeless powder">smokeless powder</a> plastic or wax cartridges. </p><p>The 18, 15, 11, 6, 3, and 2 gauge shells are the rarest of all;<sup id="cite_ref-Frank_C._Barnes_2009_6-0" class="reference"><a href="#cite_note-Frank_C._Barnes_2009-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> owners of these types of rare shotguns will usually have their ammunition custom loaded by a specialist in rare and custom bores. The 14 gauge has not been loaded in the United States since the early 20th century, although the <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style><span class="frac">2<span class="sr-only">+</span><span class="num">9</span>⁄<span class="den">16</span></span>-inch (65 mm) hull is still made in France.<sup id="cite_ref-Frank_C._Barnes_2009_6-1" class="reference"><a href="#cite_note-Frank_C._Barnes_2009-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> The very small 24 and 32 gauges are still produced and used in some European and South American countries. <a href="/wiki/Punt_gun" title="Punt gun">Punt guns</a>, which use very large shells, are rarely encountered. </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Munit05.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Munit05.jpg/220px-Munit05.jpg" decoding="async" width="220" height="148" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Munit05.jpg/330px-Munit05.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/Munit05.jpg/440px-Munit05.jpg 2x" data-file-width="538" data-file-height="362" /></a><figcaption>Garden gun calibers: 9mm Flobert shot, 9mm Flobert shot, .22 Long Rifle shot, .22 Long Rifle, .22 Long Rifle shot, .22 CB Short, and 9mm Flobert BB cap</figcaption></figure> <p>Also seen in limited numbers are <a href="/wiki/Smoothbore" title="Smoothbore">smoothbore</a> firearms in calibers smaller than .360 such as <a href="/wiki/.22_Long_Rifle" title=".22 Long Rifle">.22 Long Rifle</a> (UK No. 1 bore) and <a href="/wiki/9mm_Flobert" class="mw-redirect" title="9mm Flobert">9mm Flobert</a> <a href="/wiki/Rimfire_ammunition" title="Rimfire ammunition">rimfire</a> (UK No. 3 bore), designed for short-range pest control and <a href="/wiki/Garden_guns" class="mw-redirect" title="Garden guns">garden guns</a>. The No. 2 bore (7 mm) has long been obsolete. All three of these rimfires are available in shot and BB-cap.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-cotw10_8-0" class="reference"><a href="#cite_note-cotw10-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Gauge_and_shot_type">Gauge and shot type</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gauge_(firearms)&action=edit&section=4" title="Edit section: Gauge and shot type"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:10_Gauge_Shell.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/10_Gauge_Shell.jpg/220px-10_Gauge_Shell.jpg" decoding="async" width="220" height="248" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/42/10_Gauge_Shell.jpg/330px-10_Gauge_Shell.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/42/10_Gauge_Shell.jpg/440px-10_Gauge_Shell.jpg 2x" data-file-width="2019" data-file-height="2274" /></a><figcaption>A 10-gauge (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>-inch (89 mm)) shotgun shell shown next to a <a href="/wiki/Quarter_(United_States_coin)" title="Quarter (United States coin)">United States quarter</a></figcaption></figure> <p>The 10 gauge narrowly escaped obsolescence when steel and other <a href="/wiki/Shot_(pellet)#Non-toxic_alternatives_to_lead_shot" title="Shot (pellet)">nontoxic shot</a> became required for <a href="/wiki/Waterfowl_hunting" title="Waterfowl hunting">waterfowl hunting</a>, since the larger shell could hold the much larger sizes of low-density steel shot needed to reach the ranges necessary for waterfowl hunting. The move to steel shot reduced the use of 16 and 20 gauges for waterfowl hunting, and the shorter, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>-inch (70 mm), 12-gauge shells as well. However, the <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>-inch (89 mm) 12-gauge shell, with its higher <a href="/wiki/SAAMI" class="mw-redirect" title="SAAMI">SAAMI</a> pressure rating of 14,000 psi (97 MPa) compared to standard <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>-inch (70 mm) and 3-inch (76 mm) 12-gauge shells with their lower pressure rating of 11,500 psi (79 MPa), began to approach the performance of the <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>-inch (89 mm) 10-gauge shells with a pressure rating of 11,000 psi (76 MPa).<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Newer nontoxic shots, such as <a href="/wiki/Bismuth" title="Bismuth">bismuth</a> or <a href="/wiki/Tungsten" title="Tungsten">tungsten</a>-nickel-iron alloys, and even tungsten-<a href="/wiki/Polymer" title="Polymer">polymer</a> blends, regain much or all of the performance loss, but are much more expensive than <a href="/wiki/Steel" title="Steel">steel</a> or <a href="/wiki/Lead" title="Lead">lead</a> shot.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> However, laboratory research indicates that tungsten alloys can actually be quite toxic internally.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading3"><h3 id="Bore_sizes_used_in_the_United_Kingdom">Bore sizes used in the United Kingdom</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gauge_(firearms)&action=edit&section=5" title="Edit section: Bore sizes used in the United Kingdom"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Legend: left side is the bore size, right side is the case length </p> <ul><li><a href="/wiki/2_bore" title="2 bore">2 bore</a>: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> in (89 mm)</li> <li><a href="/wiki/4_bore" title="4 bore">4 bore</a>: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">4</span></span>, 4 in (83, 102 mm)</li> <li><a href="/wiki/6_bore" title="6 bore">6 bore</a></li> <li><a href="/wiki/8_bore" title="8 bore">8 bore</a>: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3, <span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">4</span></span>, <span class="frac">3<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>, 4 in (76, 83, 95, 102 mm)</li> <li>10 bore: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">9</span>⁄<span class="den">16</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">5</span>⁄<span class="den">8</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">7</span>⁄<span class="den">8</span></span>, 3, <span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">4</span></span>, <span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> in (65, 67, 73, 76, 83, 89 mm)</li> <li>12 bore: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">1<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>, 2, <span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">4</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>, 3, <span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> in (44, 51, 57, 64, 70, 76, 89 mm)</li> <li>14 bore: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> in (64 mm)</li> <li>16 bore: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">9</span>⁄<span class="den">16</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">5</span>⁄<span class="den">8</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>, 3 in (64, 65, 67, 70, 76 mm)</li> <li><a href="/wiki/20_gauge" class="mw-redirect" title="20 gauge">20 bore</a>: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>, 3, <span class="frac">3<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> in (64, 70, 76, 89 mm)</li> <li>24 bore: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> in (64 mm)</li> <li>28 bore: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>, <span class="frac">2<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span>, 3 in (64, 70, 76 mm)</li> <li>32 bore: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span> in (64 mm)</li> <li><a href="/wiki/.410_bore" title=".410 bore">.410 bore</a>: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">2, <span class="frac">2<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">2</span></span>, 3 in (51, 64, 76 mm)</li> <li><a href="/wiki/.360_bore" title=".360 bore">.360 bore</a>: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac">1<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">4</span></span> in (44 mm)</li> <li>9 mm (No. 3 bore) short rimfire, 9 mm (No. 3 bore) long rimfire</li> <li>7 mm (No. 2 bore) rimfire</li> <li>6 mm (No. 1 bore) short rimfire, 6 mm (No. 1 bore) long rimfire</li></ul> <div class="mw-heading mw-heading2"><h2 id="Conversion_guide">Conversion guide</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gauge_(firearms)&action=edit&section=6" title="Edit section: Conversion guide"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:YoungFCSelous.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/b/be/YoungFCSelous.jpg/200px-YoungFCSelous.jpg" decoding="async" width="200" height="304" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/b/be/YoungFCSelous.jpg/300px-YoungFCSelous.jpg 1.5x, //upload.wikimedia.org/wikipedia/en/b/be/YoungFCSelous.jpg 2x" data-file-width="395" data-file-height="600" /></a><figcaption>Portrait of <a href="/wiki/Frederick_Courteney_Selous" class="mw-redirect" title="Frederick Courteney Selous">Frederick Courteney Selous</a> with his <a href="/wiki/4_bore" title="4 bore">4 bore</a> single-shot Boer rifle and African hunting regalia, 1876</figcaption></figure> <p>The table below lists various gauge sizes with weights. The bores marked <sup>*</sup> are found in punt guns, obsolete, or rare weapons only. However, 4 gauge was sometimes found used in <a href="/wiki/Blunderbuss" title="Blunderbuss">blunderbuss</a> guns made for coach defense and protection against piracy. The <a href="/wiki/.410_bore" title=".410 bore">.410</a> and <a href="/wiki/KS-23" title="KS-23">23 mm</a> are exceptions; they are actual bore sizes, not gauges. If the .410 bore and 23 mm diameters were measured using more traditional means, they would be equivalent to 67.62 gauge (.410 bore) and 6.278 gauge (23 mm), respectively. </p> <table class="wikitable" style="margin-left:auto;margin-right:auto;"> <tbody><tr> <th rowspan="2">Gauge<br />(bore)</th> <th colspan="2">Diameter</th> <th colspan="3">Weight of unalloyed (pure) lead ball </th></tr> <tr> <th>(mm)</th> <th>(in)</th> <th>grams</th> <th>ounces</th> <th>grains </th></tr> <tr> <td>AA<sup>*</sup></td> <td>101.60</td> <td>4.000</td> <td>6,225.52</td> <td>219.6</td> <td>96,080 </td></tr> <tr> <td>A<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">2</span></span>⁠</span><sup>*</sup></td> <td>76.20</td> <td>3.000</td> <td>2,626.39</td> <td>92.64</td> <td>40,530 </td></tr> <tr> <td>0.25<sup>*</sup></td> <td>67.34</td> <td>2.651</td> <td>1,814.36</td> <td>64.000</td> <td>28,000 </td></tr> <tr> <td>0.5<sup>*</sup></td> <td>53.45</td> <td>2.103</td> <td>907.18</td> <td>32.000</td> <td>14,000 </td></tr> <tr> <td>A<sup>*</sup></td> <td>50.80</td> <td>2.000</td> <td>778.19</td> <td>27.45</td> <td>12,010 </td></tr> <tr> <td>0.75<sup>*</sup></td> <td>46.70</td> <td>1.838</td> <td>604.80</td> <td>21.336</td> <td>9,328 </td></tr> <tr> <td>1<sup>*</sup></td> <td>42.42</td> <td>1.669</td> <td>453.59</td> <td>16.000</td> <td>7,000 </td></tr> <tr> <td>B<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><span class="sfrac">⁠<span class="tion"><span class="num">1</span><span class="sr-only">/</span><span class="den">2</span></span>⁠</span><sup>*</sup></td> <td>38.10</td> <td>1.500</td> <td>328.3</td> <td>11.58</td> <td>5,066 </td></tr> <tr> <td>1.5<sup>*</sup></td> <td>37.05</td> <td>1.459</td> <td>302.39</td> <td>10.667</td> <td>4,667 </td></tr> <tr> <td>2<sup>*</sup></td> <td>33.67</td> <td>1.326</td> <td>226.80</td> <td>8.000</td> <td>3,500 </td></tr> <tr> <td>3<sup>*</sup></td> <td>29.41</td> <td>1.158</td> <td>151.20</td> <td>5.333</td> <td>2,333 </td></tr> <tr> <td>4<sup>*</sup></td> <td>26.72</td> <td>1.052</td> <td>113.40</td> <td>4.000</td> <td>1,750 </td></tr> <tr> <td>B<sup>*</sup></td> <td>25.40</td> <td>1.000</td> <td>97.27</td> <td>3.43</td> <td>1,501 </td></tr> <tr> <td>5<sup>*</sup></td> <td>24.80</td> <td>0.976</td> <td>90.72</td> <td>3.200</td> <td>1,400 </td></tr> <tr> <td>6<sup>*</sup></td> <td>23.35</td> <td>0.919</td> <td>75.60</td> <td>2.667</td> <td>1,166 </td></tr> <tr> <td>6.278<sup>*</sup></td> <td>23.00</td> <td>0.906</td> <td>72.26</td> <td>2.549</td> <td>1,114 </td></tr> <tr> <td>7<sup>*</sup></td> <td>22.18</td> <td>0.873</td> <td>64.80</td> <td>2.286</td> <td>1,000 </td></tr> <tr> <td>8<sup>*</sup></td> <td>21.21</td> <td>0.835</td> <td>56.70</td> <td>2.000</td> <td>875 </td></tr> <tr> <td>9<sup>*</sup></td> <td>20.39</td> <td>0.803</td> <td>50.40</td> <td>1.778</td> <td>778 </td></tr> <tr> <td>10</td> <td>19.69</td> <td>0.775</td> <td>45.36</td> <td>1.600</td> <td>700 </td></tr> <tr> <td>11<sup>*</sup></td> <td>19.07</td> <td>0.751</td> <td>41.24</td> <td>1.454</td> <td>636 </td></tr> <tr> <td>12</td> <td>18.53</td> <td>0.729</td> <td>37.80</td> <td>1.333</td> <td>583 </td></tr> <tr> <td>13<sup>*</sup></td> <td>18.04</td> <td>0.710</td> <td>34.89</td> <td>1.231</td> <td>538 </td></tr> <tr> <td>14<sup>*</sup></td> <td>17.60</td> <td>0.693</td> <td>32.40</td> <td>1.143</td> <td>500 </td></tr> <tr> <td>15<sup>*</sup></td> <td>17.21</td> <td>0.677</td> <td>30.24</td> <td>1.067</td> <td>467 </td></tr> <tr> <td>16</td> <td>16.83</td> <td>0.663</td> <td>28.35</td> <td>1.000</td> <td>438 </td></tr> <tr> <td>17<sup>*</sup></td> <td>16.50</td> <td>0.650</td> <td>26.68</td> <td>0.941</td> <td>412 </td></tr> <tr> <td>18<sup>*</sup></td> <td>16.19</td> <td>0.637</td> <td>25.20</td> <td>0.889</td> <td>389 </td></tr> <tr> <td>20</td> <td>15.63</td> <td>0.615</td> <td>22.68</td> <td>0.800</td> <td>350 </td></tr> <tr> <td>22<sup>*</sup></td> <td>15.13</td> <td>0.596</td> <td>20.62</td> <td>0.728</td> <td>319 </td></tr> <tr> <td>24</td> <td>14.70</td> <td>0.579</td> <td>18.90</td> <td>0.667</td> <td>292 </td></tr> <tr> <td>26<sup>*</sup></td> <td>14.31</td> <td>0.564</td> <td>17.44</td> <td>0.615</td> <td>269 </td></tr> <tr> <td>28</td> <td>13.97</td> <td>0.550</td> <td>16.20</td> <td>0.571</td> <td>250 </td></tr> <tr> <td>32</td> <td>13.36</td> <td>0.526</td> <td>14.17</td> <td>0.500</td> <td>219 </td></tr> <tr> <td>36<sup>*</sup></td> <td>12.85</td> <td>0.506</td> <td>12.59</td> <td>0.444</td> <td>194 </td></tr> <tr> <td>40<sup>*</sup></td> <td>12.40</td> <td>0.488</td> <td>11.34</td> <td>0.400</td> <td>175 </td></tr> <tr> <td>67.62</td> <td>10.41</td> <td>0.410</td> <td>6.71</td> <td>0.237</td> <td>104 </td></tr></tbody></table> <p>Note: Use of this table for estimating bullet masses for historical large-bore rifles is limited, as this table assumes the use of round ball, rather than conical bullets; for example, a typical 4-bore rifle from circa 1880 used a 2,000-grain (4.57 oz; 129.60 g) bullet, or sometimes slightly heavier, rather than using a 4-ounce (110 g) round lead ball. (Round balls lose velocity faster than conical bullets and have much steeper ballistic trajectories beyond about 75 yards or 69 metres) In contrast, a 4-bore <a href="/wiki/Express_rifle" class="mw-redirect" title="Express rifle">express rifle</a> often used a 1,500-grain (3.43 oz; 97.20 g) bullet wrapped in paper to keep lead buildup to a minimum in the barrel. In either case, assuming a 4-ounce (110 g) mass for a 4-bore rifle bullet from this table would be inaccurate, although indicative. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Gauge_(firearms)&action=edit&section=7" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFBarnesWoodard2016" class="citation book cs1">Barnes, Frank C.; Woodard, W. Todd (2016). <i>Cartridges of the world : a complete and illustrated reference for more than 1500 cartridges</i> (15th ed.). Krause Publications. p. 629. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1440246425" title="Special:BookSources/978-1440246425"><bdi>978-1440246425</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/934886116">934886116</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Cartridges+of+the+world+%3A+a+complete+and+illustrated+reference+for+more+than+1500+cartridges&rft.pages=629&rft.edition=15th&rft.pub=Krause+Publications&rft.date=2016&rft_id=info%3Aoclcnum%2F934886116&rft.isbn=978-1440246425&rft.aulast=Barnes&rft.aufirst=Frank+C.&rft.au=Woodard%2C+W.+Todd&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.fourten.org.uk/shotgunbores.html">Fourten Shotgun Resources</a>.</span> </li> <li id="cite_note-Outly-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-Outly_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Outly_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKrause" class="citation web cs1">Krause, Angel. <a rel="nofollow" class="external text" href="https://outly.com/outly/journal/shotgun-gauge-use-for-hunting">"What Shotgun Gauge Should I Use for Hunting?"</a>. <i>Outly</i><span class="reference-accessdate">. Retrieved <span class="nowrap">27 November</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Outly&rft.atitle=What+Shotgun+Gauge+Should+I+Use+for+Hunting%3F&rft.aulast=Krause&rft.aufirst=Angel&rft_id=https%3A%2F%2Foutly.com%2Foutly%2Fjournal%2Fshotgun-gauge-use-for-hunting&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCarter2002" class="citation book cs1">Carter, Greg Lee (2002). <i>Guns in American Society: An Encyclopedia</i>. Santa Barbara, Calif.; Oxford: ABC-CLIO. p. 361. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-57607-268-4" title="Special:BookSources/978-1-57607-268-4"><bdi>978-1-57607-268-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Guns+in+American+Society%3A+An+Encyclopedia&rft.place=Santa+Barbara%2C+Calif.%3B+Oxford&rft.pages=361&rft.pub=ABC-CLIO&rft.date=2002&rft.isbn=978-1-57607-268-4&rft.aulast=Carter&rft.aufirst=Greg+Lee&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">Wintersteen, K. (2014, December 9). The decline of 10- & 16-gauge shotguns. Firearms News. <a rel="nofollow" class="external free" href="https://www.firearmsnews.com/editorial/decline-10-16-gauge-shotguns/78028">https://www.firearmsnews.com/editorial/decline-10-16-gauge-shotguns/78028</a></span> </li> <li id="cite_note-Frank_C._Barnes_2009-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-Frank_C._Barnes_2009_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Frank_C._Barnes_2009_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFrank_C._Barnes2009" class="citation book cs1">Frank C. Barnes (2009). Layne Simpson (ed.). <i>Cartridges of the World</i> (12th ed.).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Cartridges+of+the+World&rft.edition=12th&rft.date=2009&rft.au=Frank+C.+Barnes&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFClair_Rees2000" class="citation journal cs1">Clair Rees (March 2000). <a rel="nofollow" class="external text" href="http://findarticles.com/p/articles/mi_m0BQY/is_3_46/ai_59281208">"Marlin's 'Garden Gun'—Model 25MG"</a>. <i>Guns Magazine</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080429112608/http://findarticles.com/p/articles/mi_m0BQY/is_3_46/ai_59281208">Archived</a> from the original on 2008-04-29<span class="reference-accessdate">. Retrieved <span class="nowrap">2008-05-08</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Guns+Magazine&rft.atitle=Marlin%27s+%27Garden+Gun%27%E2%80%94Model+25MG&rft.date=2000-03&rft.au=Clair+Rees&rft_id=http%3A%2F%2Ffindarticles.com%2Fp%2Farticles%2Fmi_m0BQY%2Fis_3_46%2Fai_59281208&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> <li id="cite_note-cotw10-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-cotw10_8-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFrank_C._Barnes2003" class="citation book cs1">Frank C. Barnes (2003). Stan Skinner (ed.). <i>Cartridges of the World</i> (10th ed.). Krause Publications. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-87349-605-1" title="Special:BookSources/0-87349-605-1"><bdi>0-87349-605-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Cartridges+of+the+World&rft.edition=10th&rft.pub=Krause+Publications&rft.date=2003&rft.isbn=0-87349-605-1&rft.au=Frank+C.+Barnes&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text">Tom Roster is an independent ballistics consultant and author specializing in the design and testing of shotshell loads for U.S. shotshell and reloading components manufacturers. He is a court-recognized shotshell/shotgun expert witness. Tom was formerly, T. R. (2014, January 1). Important information about shotshell pressures. Shotgun Life. <a rel="nofollow" class="external free" href="https://www.shotgunlife.com/shotguns/tom-roster/important-information-about-shotshell-pressures.html">https://www.shotgunlife.com/shotguns/tom-roster/important-information-about-shotshell-pressures.html</a></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRandy_Wakeman2007" class="citation web cs1">Randy Wakeman (2007). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060513044431/http://www.chuckhawks.com/10_gauge_obsolete.htm">"Why the 10 Gauge Shotgun Is Obsolete"</a>. chuckhawks.com. Archived from <a rel="nofollow" class="external text" href="http://www.chuckhawks.com/10_gauge_obsolete.htm">the original</a> on 2006-05-13.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Why+the+10+Gauge+Shotgun+Is+Obsolete&rft.pub=chuckhawks.com&rft.date=2007&rft.au=Randy+Wakeman&rft_id=http%3A%2F%2Fwww.chuckhawks.com%2F10_gauge_obsolete.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJohn_Kalinich2005" class="citation journal cs1">John Kalinich; et al. (2005). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1257598">"Embedded weapons-grade tungsten alloy shrapnel rapidly induces metastatic high-grade rhabdomyosarcomas in F344 rats"</a>. <i>Environmental Health Perspectives</i>. <b>113</b> (6): 729–34. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2005EnvHP.113..729K">2005EnvHP.113..729K</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1289%2Fehp.7791">10.1289/ehp.7791</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1257598">1257598</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/15929896">15929896</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Environmental+Health+Perspectives&rft.atitle=Embedded+weapons-grade+tungsten+alloy+shrapnel+rapidly+induces+metastatic+high-grade+rhabdomyosarcomas+in+F344+rats&rft.volume=113&rft.issue=6&rft.pages=729-34&rft.date=2005&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC1257598%23id-name%3DPMC&rft_id=info%3Apmid%2F15929896&rft_id=info%3Adoi%2F10.1289%2Fehp.7791&rft_id=info%3Abibcode%2F2005EnvHP.113..729K&rft.au=John+Kalinich&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC1257598&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGauge+%28firearms%29" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><style 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li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Firearms" title="Template:Firearms"><abbr title="View this template" style="color:inherit">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Firearms" title="Template talk:Firearms"><abbr title="Discuss this template" style="color:inherit">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Firearms" title="Special:EditPage/Template:Firearms"><abbr title="Edit this template" style="color:inherit">e</abbr></a></li></ul></div><div id="Firearms_(list,_glossary,_and_topics)" style="font-size:114%;margin:0 4em"><a href="/wiki/Firearm" title="Firearm">Firearms</a> (<a href="/wiki/List_of_firearms" title="List of firearms">list</a>, <a href="/wiki/Glossary_of_firearms_terms" title="Glossary of firearms terms">glossary</a>, and <a href="/wiki/Category:Firearms" title="Category:Firearms">topics</a>)</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Firearm" title="Firearm">Firearm</a> <ul><li><a href="/wiki/Category:Lists_of_firearms" title="Category:Lists of firearms">lists</a></li></ul></li> <li><a href="/wiki/Gun" title="Gun">Gun</a></li> <li><a href="/wiki/History_of_the_firearm" title="History of the firearm">History</a></li> <li><a href="/wiki/Gun_safety" title="Gun safety">Safety</a></li> <li><a href="/wiki/War" title="War">War</a></li> <li><a href="/wiki/Weapon" title="Weapon">Weapon</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible expanded navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Types_of_firearms" style="font-size:114%;margin:0 4em"><a href="/wiki/Firearm#Types" title="Firearm">Types of firearms</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Breechloader" title="Breechloader">Breechloader</a> versus <a href="/wiki/Muzzleloader" title="Muzzleloader">muzzleloader</a></li> <li><a href="/wiki/Combination_guns" class="mw-redirect" title="Combination guns">Combination</a></li> <li><a href="/wiki/Elephant_gun" title="Elephant gun">Elephant</a></li> <li><a href="/wiki/Flare_gun" title="Flare gun">Flare gun</a></li> <li><a href="/wiki/Line_thrower" title="Line thrower">Line thrower</a></li> <li><a href="/wiki/Long_gun" title="Long gun">Long gun</a> <ul><li><a href="/wiki/Carbine" title="Carbine">Carbine</a></li> <li><a href="/wiki/Musket" title="Musket">Musket</a></li> <li><a href="/wiki/Takedown_gun" title="Takedown gun">Takedown</a></li></ul></li> <li><a href="/wiki/Multiple-barrel_firearm" title="Multiple-barrel firearm">Multiple-barrel</a> (<a href="/wiki/List_of_multiple-barrel_firearms" title="List of multiple-barrel firearms">list</a>)</li> <li><a href="/wiki/Needlegun" title="Needlegun">Needler</a></li> <li><a href="/wiki/Net_gun" title="Net gun">Net gun</a></li> <li><a href="/wiki/Pen_gun" title="Pen gun">Pen gun</a></li> <li><a href="/wiki/Riot_gun" title="Riot gun">Riot gun</a></li> <li><a href="/wiki/Rotary_cannon" title="Rotary cannon">Rotary</a></li> <li><a href="/wiki/Single-shot" title="Single-shot">Single-shot</a></li> <li><a href="/wiki/Sleeve_gun" title="Sleeve gun">Sleeve gun</a></li> <li><a href="/wiki/Smoothbore" title="Smoothbore">Smoothbore</a></li> <li><a href="/wiki/Spring-gun" title="Spring-gun">Spring-gun</a></li> <li><a href="/wiki/Underwater_firearm" title="Underwater firearm">Underwater firearm</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Handgun" title="Handgun">Handguns</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cane_gun" title="Cane gun">Cane gun</a></li> <li><a href="/wiki/Derringer" title="Derringer">Derringer</a></li> <li><a href="/wiki/Duelling_pistol" title="Duelling pistol">Duelling</a></li> <li><a href="/wiki/Pistol" title="Pistol">Pistol</a> <ul><li><a href="/wiki/List_of_pistols" title="List of pistols">list</a></li></ul></li> <li><a href="/wiki/Machine_pistol" title="Machine pistol">Machine</a></li> <li><a href="/wiki/Pepper-box" title="Pepper-box">Pepper-box</a></li> <li><a href="/wiki/Pocket_pistol" title="Pocket pistol">Pocket</a></li> <li><a href="/wiki/Revolver" title="Revolver">Revolver</a> <ul><li><a href="/wiki/List_of_revolvers" title="List of revolvers">list</a></li></ul></li> <li><a href="/wiki/Semi-automatic_pistol" title="Semi-automatic pistol">Semi-automatic pistol</a> <ul><li><a href="/wiki/List_of_semi-automatic_pistols" title="List of semi-automatic pistols">list</a></li></ul></li> <li><a href="/wiki/Pistol_caliber_carbine" class="mw-redirect" title="Pistol caliber carbine">Pistol caliber</a> <ul><li><a href="/wiki/Personal_defence_weapon" class="mw-redirect" title="Personal defence weapon">Personal defence weapon</a></li> <li><a href="/wiki/Submachine_gun" title="Submachine gun">Submachine gun</a></li></ul></li> <li><a href="/wiki/Starting_pistol" title="Starting pistol">Starting</a></li> <li><a href="/wiki/Wallet_gun" title="Wallet gun">Wallet gun</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Rifle" title="Rifle">Rifles</a> (<a href="/wiki/List_of_rifles" title="List of rifles">list</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Anti-materiel_rifle" title="Anti-materiel rifle">Anti-materiel</a></li> <li><a href="/wiki/Anti-tank_rifle" title="Anti-tank rifle">Anti-tank</a></li> <li><a href="/wiki/Assault_rifle" title="Assault rifle">Assault</a> <ul><li><a href="/wiki/List_of_assault_rifles" title="List of assault rifles">list</a></li></ul></li> <li><a href="/wiki/Automatic_rifle" title="Automatic rifle">Automatic</a></li> <li><a href="/wiki/Battle_rifle" title="Battle rifle">Battle</a> <ul><li><a href="/wiki/List_of_battle_rifles" title="List of battle rifles">list</a></li></ul></li> <li><a href="/wiki/Carbine_rifle" class="mw-redirect" title="Carbine rifle">Carbine</a> <ul><li><a href="/wiki/List_of_carbines" title="List of carbines">list</a></li></ul></li> <li><a href="/wiki/Double_rifle" title="Double rifle">Double</a></li> <li><a href="/wiki/Hunting_rifle" class="mw-redirect" title="Hunting rifle">Hunting</a> <ul><li><a href="/wiki/Buffalo_rifle" title="Buffalo rifle">Buffalo</a></li> <li><a href="/wiki/Elephant_rifle" class="mw-redirect" title="Elephant rifle">Elephant</a></li> <li><a href="/wiki/Express_rifle" class="mw-redirect" title="Express rifle">Express</a></li> <li><a href="/wiki/Punt_gun" title="Punt gun">Punt</a></li> <li><a href="/wiki/Varmint_rifle" title="Varmint rifle">Varmint</a></li></ul></li> <li><a href="/wiki/Designated_marksman_rifle" title="Designated marksman rifle">Marksman</a></li> <li><a href="/wiki/Rifling" title="Rifling">Rifling</a> <ul><li><a href="/wiki/Polygonal_rifling" title="Polygonal rifling">Polygonal</a></li></ul></li> <li><a href="/wiki/Repeating_rifle" title="Repeating rifle">Repeating</a></li> <li><a href="/wiki/Sniper_rifle" title="Sniper rifle">Sniper</a> <ul><li><a href="/wiki/List_of_sniper_rifles" title="List of sniper rifles">list</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;font-weight:normal;"><a href="/wiki/Machine_gun" title="Machine gun">Machine guns</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/General_purpose_machine_gun" class="mw-redirect" title="General purpose machine gun">General purpose</a></li> <li><a href="/wiki/Light_machine_gun" title="Light machine gun">Light</a></li> <li><a href="/wiki/Medium_machine_gun" title="Medium machine gun">Medium</a></li> <li><a href="/wiki/Heavy_machine_gun" title="Heavy machine gun">Heavy</a></li> <li><a href="/wiki/Squad_automatic_weapon" title="Squad automatic weapon">SAW</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Shotgun" title="Shotgun">Shotguns</a> (<a href="/wiki/List_of_shotguns" title="List of shotguns">list</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Automatic_shotgun" title="Automatic shotgun">Automatic shotgun</a></li> <li><a href="/wiki/Coach_gun" title="Coach gun">Coach gun</a></li> <li><a href="/wiki/Combat_shotgun" title="Combat shotgun">Combat shotgun</a></li> <li><a href="/wiki/Double-barreled_shotgun" title="Double-barreled shotgun">Double-barreled</a></li> <li><a href="/wiki/Pump_action" title="Pump action">Pump action</a></li> <li><a href="/wiki/Riot_shotgun" title="Riot shotgun">Riot</a></li> <li><a href="/wiki/Sawed-off_shotgun" title="Sawed-off shotgun">Sawed-off</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;font-weight:normal;">Ammunition</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/20-gauge_shotgun" title="20-gauge shotgun">20-gauge shotgun</a></li> <li><a href="/wiki/Breaching_round" title="Breaching round">Breaching round</a></li> <li><a href="/wiki/Dragon%27s_breath_(ammunition)" title="Dragon's breath (ammunition)">Dragon's breath</a></li> <li><a href="/wiki/Shotgun_shell" class="mw-redirect" title="Shotgun shell">Shotgun shell</a> <ul><li><a href="/wiki/.410_bore" title=".410 bore">.410 bore</a></li></ul></li> <li><a href="/wiki/Shot_(pellet)" title="Shot (pellet)">Shot</a></li> <li><a href="/wiki/Shotgun_slug" title="Shotgun slug">Slug</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/History_of_the_firearm" title="History of the firearm">Historic</a> or famous</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AK-47" title="AK-47">AK-47</a></li> <li><a href="/wiki/AR-15_style_rifle" class="mw-redirect" title="AR-15 style rifle">AR-15</a></li> <li><a href="/wiki/M16" class="mw-redirect" title="M16">M16</a></li> <li><a href="/wiki/Antique_firearms" title="Antique firearms">Antique firearms</a></li> <li><a href="/wiki/Gatling_gun" title="Gatling gun">Gatling gun</a></li> <li><a href="/wiki/Winchester_rifle" title="Winchester rifle">Winchester rifle</a></li> <li><a href="/wiki/M1_Garand" title="M1 Garand">M1 Garand</a></li> <li><a href="/wiki/Mauser_rifles" class="mw-redirect" title="Mauser rifles">Mauser rifles</a></li> <li><a href="/wiki/Thompson_submachine_gun" title="Thompson submachine gun">Tommy Gun</a></li> <li><a href="/wiki/MP_40" title="MP 40">MP 40</a></li> <li><a href="/wiki/Uzi" title="Uzi">Uzi</a></li> <li><a href="/wiki/Colt_Single_Action_Army" title="Colt Single Action Army">Colt Peacemaker</a></li> <li><a href="/wiki/M1911" class="mw-redirect" title="M1911">M1911</a></li> <li><a href="/wiki/Glock" title="Glock">Glock</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible expanded navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Mechanics_and_components" style="font-size:114%;margin:0 4em">Mechanics and <a href="/wiki/Category:Firearm_components" title="Category:Firearm components">components</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Category:Firearm_components" title="Category:Firearm components">Components</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gun_barrel" title="Gun barrel">Barrel</a> <ul><li><a href="/wiki/Feed_ramp" title="Feed ramp">Feed ramp</a></li> <li><a href="/wiki/Slug_barrel" title="Slug barrel">Slug</a></li> <li><a href="/wiki/Barrel_threads" title="Barrel threads">Threads</a></li> <li><a href="/wiki/Trunnion" title="Trunnion">Trunnion</a></li></ul></li> <li><a href="/wiki/Bayonet" title="Bayonet">Bayonet</a></li> <li><a href="/wiki/Belt_(firearms)" title="Belt (firearms)">Belt</a></li> <li><a href="/wiki/Blank-firing_adapter" title="Blank-firing adapter">Blank-firing adapter</a></li> <li><a href="/wiki/Breechblock" title="Breechblock">Breechblock</a></li> <li><a href="/wiki/Breechface" title="Breechface">Breechface</a></li> <li><a href="/wiki/Bolt_(firearms)" title="Bolt (firearms)">Bolt</a> <ul><li><a href="/wiki/Rotating_bolt" title="Rotating bolt">Rotating</a></li> <li><a href="/wiki/Telescoping_bolt" title="Telescoping bolt">Telescoping</a></li> <li><a href="/wiki/Flapper_locking" title="Flapper locking">Flapper</a></li> <li><a href="/wiki/Roller_locked" title="Roller locked">Roller</a></li> <li><a href="/wiki/Tilting_bolt" title="Tilting bolt">Tilting</a></li></ul></li> <li><a href="/wiki/Bump_stock" title="Bump stock">Bump stock</a></li> <li><a href="/wiki/Chamber_(firearms)" title="Chamber (firearms)">Chamber</a></li> <li><a href="/wiki/Cocking_handle" title="Cocking handle">Cocking handle</a></li> <li><a href="/wiki/Cylinder_(firearms)" title="Cylinder (firearms)">Cylinder</a></li> <li><a href="/wiki/Extractor_(firearms)" title="Extractor (firearms)">Extractor</a></li> <li><a href="/wiki/Firing_pin" title="Firing pin">Firing pin</a></li> <li><a href="/wiki/Flash_suppressor" title="Flash suppressor">Flash suppressor</a></li> <li><a href="/wiki/Fluting_(firearms)" title="Fluting (firearms)">Fluting</a></li> <li><a href="/wiki/Forward_assist" title="Forward assist">Forward assist</a></li> <li><a href="/wiki/Freebore" title="Freebore">Freebore</a></li> <li><a href="/wiki/Forearm_(firearm_component)" title="Forearm (firearm component)">Forearm</a></li> <li><a href="/wiki/Vertical_forward_grip" title="Vertical forward grip">Foregrip</a></li> <li><a href="/wiki/Hammer_(firearms)" title="Hammer (firearms)">Hammer</a> <ul><li><a href="/wiki/Half-cock" title="Half-cock">Half-cock</a></li> <li><a href="/wiki/Hammer_(firearms)#Linear_hammer" title="Hammer (firearms)">Linear</a></li> <li><a href="/wiki/Hammer_(firearms)#Striker" title="Hammer (firearms)">Striker</a></li></ul></li> <li><a href="/wiki/Lock_(firearm)" title="Lock (firearm)">Lock</a> <ul><li><a href="/wiki/Flintlock" title="Flintlock">Flintlock</a></li> <li><a href="/wiki/Wheellock" title="Wheellock">Wheellock</a></li></ul></li> <li><a href="/wiki/Magazine_(firearms)" title="Magazine (firearms)">Magazine</a> <ul><li><a href="/wiki/Bottom_metal" title="Bottom metal">Bottom metal</a></li> <li><a href="/wiki/Clip_(firearms)" title="Clip (firearms)">Clip</a></li> <li><a href="/wiki/Drum_magazine" title="Drum magazine">Drum</a></li> <li><a href="/wiki/High-capacity_magazine" title="High-capacity magazine">High-capacity</a></li> <li><a href="/wiki/Speedloader" title="Speedloader">Speedloader</a></li> <li><a href="/wiki/Stripper_clip" title="Stripper clip">Stripper clip</a></li></ul></li> <li><a href="/wiki/Muzzle_brake" title="Muzzle brake">Muzzle brake</a></li> <li><a href="/wiki/Muzzle_shroud" title="Muzzle shroud">Muzzle shroud</a></li> <li><a href="/wiki/Pistol_grip" title="Pistol grip">Pistol grip</a></li> <li><a href="/wiki/Pistol_slide" title="Pistol slide">Pistol slide</a></li> <li><a href="/wiki/Rail_system_(firearms)" class="mw-redirect" title="Rail system (firearms)">Rail system</a></li> <li><a href="/wiki/Receiver_(firearms)" title="Receiver (firearms)">Receiver</a></li> <li><a href="/wiki/Recoil_pad" title="Recoil pad">Recoil pad</a></li> <li><a href="/wiki/Rim_(firearms)" title="Rim (firearms)">Rim</a></li> <li><a href="/wiki/Safety_(firearms)" title="Safety (firearms)">Safety</a></li> <li><a href="/wiki/Sear_(firearm)" title="Sear (firearm)">Sear</a> <ul><li><a href="/wiki/Auto_sear" title="Auto sear">Auto sear</a></li></ul></li> <li><a href="/wiki/Barrel_shroud" title="Barrel shroud">Shroud</a></li> <li><a href="/wiki/Silencer_(firearms)" title="Silencer (firearms)">Silencer</a></li> <li><a href="/wiki/Squeeze_bore" title="Squeeze bore">Squeeze bore</a></li> <li><a href="/wiki/Choke_(firearms)" title="Choke (firearms)">Choke</a></li> <li><a href="/wiki/Stock_(firearms)" title="Stock (firearms)">Stock</a></li> <li><a href="/wiki/Synchronization_gear" title="Synchronization gear">Synchronization gear</a></li> <li><a href="/wiki/Tapering_(firearms)" title="Tapering (firearms)">Tapering</a></li> <li><a href="/wiki/Trigger_(firearms)" title="Trigger (firearms)">Trigger</a> <ul><li><a href="/wiki/Trigger_guard" title="Trigger guard">guard</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;font-weight:normal;"><a href="/wiki/Sight_(device)" title="Sight (device)">Sights</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diopter_sight" title="Diopter sight">Diopter</a></li> <li><a href="/wiki/Finderscope" title="Finderscope">Finderscope</a></li> <li><a href="/wiki/Globe_sight" title="Globe sight">Globe</a></li> <li><a href="/wiki/Holographic_weapon_sight" title="Holographic weapon sight">Holographic</a></li> <li><a href="/wiki/Iron_sights" title="Iron sights">Iron</a></li> <li><a href="/wiki/Laser_sight_(firearms)" title="Laser sight (firearms)">Laser</a></li> <li><a href="/wiki/Reticle" title="Reticle">Reticle</a></li> <li><a href="/wiki/Reflex_sight" class="mw-redirect" title="Reflex sight">Reflex</a> <ul><li><a href="/wiki/Red_dot_sight" title="Red dot sight">Red dot</a></li></ul></li> <li><a href="/wiki/Sight_magnifier" title="Sight magnifier">Magnifier</a></li> <li><a href="/wiki/Scope_mount" title="Scope mount">Scope mount</a></li> <li><a href="/wiki/Tang_sight" title="Tang sight">Tang</a></li> <li><a href="/wiki/Telescopic_sight" title="Telescopic sight">Telescopic</a></li> <li><a href="/wiki/Night-vision_device" title="Night-vision device">Night vision</a></li> <li><a href="/wiki/Thermal_weapon_sight" title="Thermal weapon sight">Thermal</a></li> <li><a href="/wiki/Sighting_in" title="Sighting in">Zeroing</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Action_(firearms)" title="Action (firearms)">Actions</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Blowback_(firearms)" title="Blowback (firearms)">Blowback</a></li> <li><a href="/wiki/Blow-forward" class="mw-redirect" title="Blow-forward">Blow-forward</a></li> <li><a href="/wiki/Bolt_action" title="Bolt action">Bolt</a></li> <li><a href="/wiki/Boxlock_action" title="Boxlock action">Boxlock</a></li> <li><a href="/wiki/Breechloader" title="Breechloader">Breechloading</a></li> <li><a href="/wiki/Break_action" title="Break action">Break</a></li> <li><a href="/wiki/Open_bolt" title="Open bolt">Open bolt</a></li> <li><a href="/wiki/Closed_bolt" title="Closed bolt">Closed bolt</a></li> <li><a href="/wiki/Electronic_firing" title="Electronic firing">Electronic</a></li> <li><a href="/wiki/Gas-operated_reloading" title="Gas-operated reloading">Gas-operated</a></li> <li><a href="/wiki/Lever_action" title="Lever action">Lever</a></li> <li><a href="/wiki/Muzzleloader" title="Muzzleloader">Muzzleloading</a></li> <li><a href="/wiki/Out-of-battery" title="Out-of-battery">Out-of-battery</a></li> <li><a href="/wiki/Pump_action" title="Pump action">Pump</a></li> <li><a href="/wiki/Push_feed_and_controlled_feed" title="Push feed and controlled feed">Push/Controlled feed</a></li> <li><a href="/wiki/Recoil_operation" title="Recoil operation">Recoil-operated</a></li> <li><a href="/wiki/Repeating_firearm" title="Repeating firearm">Repeating</a></li> <li><a href="/wiki/Revolver" title="Revolver">Revolver</a></li> <li><a href="/wiki/Self-loading_rifle" title="Self-loading rifle">Self-loading</a></li> <li><a href="/wiki/Single-shot" title="Single-shot">Single-shot</a></li> <li><a href="/wiki/Slamfire" title="Slamfire">Slamfire</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Physics_of_firearms" title="Physics of firearms">Physics</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ballistics" title="Ballistics">Ballistics</a> <ul><li><a href="/wiki/Ballistic_coefficient" title="Ballistic coefficient">Ballistic coefficient</a></li> <li><a href="/wiki/External_ballistics" title="External ballistics">External</a></li> <li><a href="/wiki/Terminal_ballistics" title="Terminal ballistics">Terminal</a></li> <li><a href="/wiki/Transitional_ballistics" title="Transitional ballistics">Transitional</a></li></ul></li> <li><a href="/wiki/Physics_of_firearms" title="Physics of firearms">Physics of firearms</a></li> <li><a href="/wiki/Rangefinder" title="Rangefinder">Rangefinding/keeping</a> <ul><li><a href="/wiki/Mathematical_discussion_of_rangekeeping" title="Mathematical discussion of rangekeeping">Mathematics</a></li> <li><a href="/wiki/Stadiametric_rangefinding" title="Stadiametric rangefinding">Stadiametric</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Metrics</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Accurizing" title="Accurizing">Accurizing</a></li> <li><a href="/wiki/Bore_axis" title="Bore axis">Bore axis</a></li> <li><a href="/wiki/Caliber" title="Caliber">Caliber</a></li> <li><a href="/wiki/Circular_error_probable" title="Circular error probable">Circular error probable</a></li> <li><a href="/wiki/Effective_range#Weapons" title="Effective range">Effective range</a></li> <li><a class="mw-selflink selflink">Gauge</a></li> <li><a href="/wiki/Gun_chronograph" title="Gun chronograph">Gun chronograph</a></li> <li><a href="/wiki/Gun_harmonisation" title="Gun harmonisation">Gun harmonisation</a></li> <li><a href="/wiki/Headspace_(firearms)" title="Headspace (firearms)">Headspace</a></li> <li><a href="/wiki/Length_of_pull" title="Length of pull">Length of pull</a></li> <li><a href="/wiki/Lock_time" title="Lock time">Lock time</a></li> <li><a href="/wiki/Match_grade" title="Match grade">Match grade</a></li> <li><a href="/wiki/Mean_time_between_failures" title="Mean time between failures">Mean time between failures</a></li> <li><a href="/wiki/Minute_and_second_of_arc#Firearms" title="Minute and second of arc">Minute of Angle (MOA)</a></li> <li><a href="/wiki/Muzzle_(firearms)" class="mw-redirect" title="Muzzle (firearms)">Muzzle</a> <ul><li><a href="/wiki/Muzzle_energy" title="Muzzle energy">Energy</a></li> <li><a href="/wiki/Muzzle_rise" title="Muzzle rise">Rise</a></li> <li><a href="/wiki/Muzzle_velocity" title="Muzzle velocity">Velocity</a></li></ul></li> <li><a href="/wiki/Penetration_(weaponry)" title="Penetration (weaponry)">Penetration</a></li> <li><a href="/wiki/Power_factor_(shooting_sports)" title="Power factor (shooting sports)">Power factor</a></li> <li><a href="/wiki/Precision-guided_firearm" title="Precision-guided firearm">Precision-guided</a></li> <li><a href="/wiki/Rate_of_fire" title="Rate of fire">Rate of fire</a></li> <li><a href="/wiki/Recoil" title="Recoil">Recoil</a></li> <li><a href="/wiki/Shot_grouping" title="Shot grouping">Group</a></li> <li><a href="/wiki/Stock_(firearms)#Stock_measurements" title="Stock (firearms)">Stock measurements</a></li> <li><a href="/wiki/Stopping_power" title="Stopping power">Stopping power</a> <ul><li><a href="/wiki/Handgun_effectiveness" title="Handgun effectiveness">Handgun effectiveness</a></li></ul></li> <li><a href="/wiki/Rifling#Twist_rate" title="Rifling">Twist rate</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible expanded navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Shooting_and_ammunition" style="font-size:114%;margin:0 4em"><a href="/wiki/Shooting" title="Shooting">Shooting</a> and <a href="/wiki/Ammunition" title="Ammunition">ammunition</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Gunshot" title="Gunshot">Gunshot</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dry_fire" title="Dry fire">Dry fire</a></li> <li><a href="/wiki/Shooting" title="Shooting">Firing (Shooting)</a></li> <li><a href="/wiki/Gunshot" title="Gunshot">Gunshot</a></li> <li><a href="/wiki/Shootout" title="Shootout">Firefight</a></li> <li><a href="/wiki/Firearm_maintenance" title="Firearm maintenance">Maintenance</a> <ul><li><a href="/wiki/Field_strip" title="Field strip">Field strip</a></li> <li><a href="/wiki/Fouling" title="Fouling">Fouling</a></li></ul></li> <li><a href="/wiki/Firearm_malfunction" title="Firearm malfunction">Malfunction</a> <ul><li><a href="/wiki/Cooking_off" title="Cooking off">Cooking off</a></li> <li><a href="/wiki/Hang_fire" title="Hang fire">Hang fire</a></li> <li><a href="/wiki/Squib_load" title="Squib load">Squib load</a></li></ul></li> <li><a href="/wiki/Ricochet" title="Ricochet">Ricochet</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;font-weight:normal;">Ignition</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Fire_forming" title="Fire forming">Fire forming</a></li> <li><a href="/wiki/Obturation" title="Obturation">Obturation</a></li> <li><a href="/wiki/Primer_(firearms)" title="Primer (firearms)">Primer</a> <ul><li><a href="/wiki/Gunpowder" title="Gunpowder">Gunpowder</a></li> <li><a href="/wiki/Percussion_cap" title="Percussion cap">Percussion cap</a></li> <li><a href="/wiki/Rimfire_ammunition" title="Rimfire ammunition">Rimfire</a></li> <li><a href="/wiki/Tubes_and_primers_for_ammunition" title="Tubes and primers for ammunition">Tubes and Primers</a></li></ul></li> <li><a href="/wiki/Firearm_propellant" title="Firearm propellant">Propellant</a> <ul><li><a href="/wiki/Ball_propellant" title="Ball propellant">Ball propellant</a></li> <li><a href="/wiki/Cordite" title="Cordite">Cordite</a></li> <li><a href="/wiki/Improved_military_rifle_powder" title="Improved military rifle powder">Improved Military Rifle</a></li> <li><a href="/wiki/Ramrod" title="Ramrod">Ramrod</a></li> <li><a href="/wiki/Smokeless_powder" title="Smokeless powder">Smokeless powder</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ammunition" title="Ammunition">Ammunition</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cannelure" title="Cannelure">Cannelure</a></li> <li><a href="/wiki/Dummy_round" title="Dummy round">Dummy round</a> <ul><li><a href="/wiki/Snap_cap" title="Snap cap">Snap cap</a></li></ul></li> <li><a href="/wiki/Flechette" title="Flechette">Flechette</a></li> <li><a href="/wiki/Gas_check" title="Gas check">Gas check</a></li> <li><a href="/wiki/Overpressure_ammunition" title="Overpressure ammunition">Overpressure ammunition</a></li> <li><a href="/wiki/Polymer-cased_ammunition" title="Polymer-cased ammunition">PCA</a></li> <li><a href="/wiki/Sabot_(firearms)" title="Sabot (firearms)">Sabot</a></li> <li><a href="/wiki/Wadding" title="Wadding">Wadding</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;font-weight:normal;"><a href="/wiki/Bullet" title="Bullet">Bullets</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Armor-piercing_bullet" title="Armor-piercing bullet">Armour piercing</a></li> <li><a href="/wiki/Cast_bullet" title="Cast bullet">Cast</a></li> <li><a href="/wiki/Expanding_bullet" title="Expanding bullet">Expanding</a></li> <li><a href="/wiki/Full_metal_jacket_(ammunition)" title="Full metal jacket (ammunition)">Full metal jacket</a></li> <li><a href="/wiki/Frangible_bullet" title="Frangible bullet">Frangible</a></li> <li><a href="/wiki/Green_bullet" title="Green bullet">Green</a></li> <li><a href="/wiki/Incendiary_ammunition" title="Incendiary ammunition">Incendiary</a></li> <li><a href="/wiki/High-explosive_incendiary" title="High-explosive incendiary">High explosive</a></li> <li><a href="/wiki/High-explosive_incendiary/armor-piercing_ammunition" title="High-explosive incendiary/armor-piercing ammunition">HEIAP</a></li> <li><a href="/wiki/Projectile" title="Projectile">Projectile</a></li> <li><a href="/wiki/Raufoss_Mk_211" title="Raufoss Mk 211">Raufoss</a></li> <li><a href="/wiki/Round_shot" title="Round shot">Round shot</a></li> <li><a href="/wiki/Saboted_light_armor_penetrator" title="Saboted light armor penetrator">SLAP</a></li> <li><a href="/wiki/Soft-point_bullet" title="Soft-point bullet">Soft point</a></li> <li><a href="/wiki/Supercavitating_ammunition" class="mw-redirect" title="Supercavitating ammunition">Supercavitating</a></li> <li><a href="/wiki/Total_metal_jacket" title="Total metal jacket">Total metal jacket</a></li> <li><a href="/wiki/Tracer_ammunition" title="Tracer ammunition">Tracer</a></li> <li><a href="/wiki/Hollow-base_bullet" title="Hollow-base bullet">Hollow base</a></li> <li><a href="/wiki/Hollow-point_bullet" title="Hollow-point bullet">Hollow point</a></li> <li><a href="/wiki/Mini%C3%A9_ball" title="Minié ball">Minié</a></li> <li><a href="/wiki/Meplat" title="Meplat">Meplat</a></li> <li><a href="/wiki/Plastic-tipped_bullet" title="Plastic-tipped bullet">Plastic tipped</a></li> <li><a href="/wiki/Armour-piercing,_capped,_ballistic_capped_shell" title="Armour-piercing, capped, ballistic capped shell">ABCBC</a></li> <li><a href="/wiki/Snake_shot" title="Snake shot">Snake shot</a></li> <li><a href="/wiki/Spitzer_(bullet)" title="Spitzer (bullet)">Spitzer</a></li> <li><a href="/wiki/Very-low-drag_bullet" title="Very-low-drag bullet">VLD</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;font-weight:normal;"><a href="/wiki/Cartridge_(firearms)" title="Cartridge (firearms)">Cartridges</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Blank_(cartridge)" title="Blank (cartridge)">Blank</a></li> <li><a href="/wiki/Caseless_ammunition" title="Caseless ammunition">Caseless</a></li> <li><a href="/wiki/Centerfire_cartridge" class="mw-redirect" title="Centerfire cartridge">Centrefire</a></li> <li><a href="/wiki/Handloading" title="Handloading">Handloading</a></li> <li><a href="/wiki/Rifle_cartridge" title="Rifle cartridge">Rifle cartridge</a> <ul><li><a href="/wiki/Fully_powered_cartridge" title="Fully powered cartridge">Fully powered</a></li> <li><a href="/wiki/Intermediate_cartridge" title="Intermediate cartridge">Intermediate</a></li> <li><a href="/wiki/List_of_rifle_cartridges" title="List of rifle cartridges">list</a></li></ul></li> <li><a href="/wiki/Paper_cartridge" title="Paper cartridge">Paper</a></li> <li><a href="/wiki/Pinfire_cartridge" title="Pinfire cartridge">Pinfire</a></li> <li><a href="/wiki/Wildcat_cartridge" title="Wildcat cartridge">Wildcat</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible expanded navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Society,_safety,_industry,_and_laws" style="font-size:114%;margin:0 4em"><a href="/wiki/Gun_cultures" title="Gun cultures">Society</a>, <a href="/wiki/Gun_safety" title="Gun safety">safety</a>, <a href="/wiki/Firearm_industry" class="mw-redirect" title="Firearm industry">industry</a>, and <a href="/wiki/Overview_of_gun_laws_by_nation" title="Overview of gun laws by nation">laws</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Gun_cultures" title="Gun cultures">Society</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Celebratory_gunfire" title="Celebratory gunfire">Celebratory gunfire</a></li> <li><a href="/wiki/Gun_ownership" title="Gun ownership">Civilian gun ownership</a> <ul><li><a href="/wiki/Percent_of_households_with_guns_by_country" title="Percent of households with guns by country">Household ownership rates</a></li></ul></li> <li><a href="/wiki/Exhibition_shooting" title="Exhibition shooting">Exhibition shooting</a></li> <li><a href="/wiki/Gun_cultures" title="Gun cultures">Gun cultures</a> <ul><li><a href="/wiki/Gun_culture_in_the_United_States" title="Gun culture in the United States">United States</a></li> <li><a href="/wiki/Gun_shows_in_the_United_States" title="Gun shows in the United States">Gun shows</a></li> <li><a href="/wiki/List_of_U.S._state_firearms" title="List of U.S. state firearms">State firearms</a></li></ul></li> <li><a href="/wiki/Hunting" title="Hunting">Hunting</a></li> <li><a href="/wiki/Jungle_style_(firearm_magazines)" class="mw-redirect" title="Jungle style (firearm magazines)"><i>Jungle style</i></a></li> <li><a href="/wiki/Pistol_duelling" class="mw-redirect" title="Pistol duelling">Pistol duelling</a></li> <li><a href="/wiki/Index_of_gun_politics_articles" title="Index of gun politics articles">Politics</a></li> <li><a href="/wiki/Shooting_sports" title="Shooting sports">Shooting sports</a> <ul><li><a href="/wiki/Civilian_Marksmanship_Program" title="Civilian Marksmanship Program">Civilian Marksmanship Program</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Gun_violence" title="Gun violence">Gun violence</a><br />and <a href="/wiki/Gun_safety" title="Gun safety">safety</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gun_violence_in_the_United_States" title="Gun violence in the United States">in the United States</a></li> <li><a href="/wiki/List_of_assassinations_by_firearm" title="List of assassinations by firearm">Assassinations</a></li> <li><a href="/wiki/List_of_countries_by_firearm-related_death_rate" class="mw-redirect" title="List of countries by firearm-related death rate">Deaths</a></li> <li><a href="/wiki/Forensic_firearm_examination" title="Forensic firearm examination">Forensics</a></li> <li><a href="/wiki/Gunfighter" title="Gunfighter">Gunfighter</a></li> <li><a href="/wiki/Gun_safety" title="Gun safety">Gun safety</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Firearm_industry" class="mw-redirect" title="Firearm industry">Firearm industry</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/3D_printed_firearm" title="3D printed firearm">3D printed firearm</a> <ul><li><a href="/wiki/List_of_3D_printed_weapons_and_parts" title="List of 3D printed weapons and parts">list</a></li></ul></li> <li><a href="/wiki/List_of_firearm_brands" title="List of firearm brands">Firearm brands</a></li> <li><a href="/wiki/Category:Firearms_by_country" title="Category:Firearms by country">Firearms by country</a></li> <li><a href="/wiki/Gun_shop" title="Gun shop">Gun shops</a> <ul><li><a href="/wiki/Category:Firearm_commerce" title="Category:Firearm commerce">list</a></li></ul></li> <li><a href="/wiki/Gunsmith" title="Gunsmith">Gunsmith</a></li> <li><a href="/wiki/Improvised_firearm" title="Improvised firearm">Improvised firearm</a></li> <li><a href="/wiki/List_of_most-produced_firearms" title="List of most-produced firearms">Most-produced</a></li> <li><a href="/wiki/Privately_made_firearm" class="mw-redirect" title="Privately made firearm">Privately made</a></li> <li><a href="/wiki/Small_arms_trade" title="Small arms trade">Small arms trade</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Arms_control" title="Arms control">Arms control</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Arms_control" title="Arms control">Arms</a> and <a href="/wiki/Gun_control" title="Gun control">Gun control</a> <ul><li><a href="/wiki/Disarmament" title="Disarmament">Disarmament</a></li> <li><a href="/wiki/Campaign_Against_Arms_Trade" title="Campaign Against Arms Trade">Campaign Against Arms Trade</a></li></ul></li> <li><a href="/wiki/Featureless_rifles" title="Featureless rifles">Featureless rifles</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Overview_of_gun_laws_by_nation" title="Overview of gun laws by nation">Gun laws</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0;;wide"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Air_travel_with_firearms_and_ammunition" title="Air travel with firearms and ammunition">Air travel</a></li> <li><a href="/wiki/Assault_weapons" class="mw-redirect" title="Assault weapons">Assault weapons</a></li> <li><a href="/wiki/Concealed_carry" title="Concealed carry">Concealed carry</a> <ul><li><a href="/wiki/Concealed_carry_in_the_United_States" title="Concealed carry in the United States">in the U.S.</a></li></ul></li> <li><a href="/wiki/Firearms_license" title="Firearms license">License</a></li> <li><a href="/wiki/High-capacity_magazine_ban" title="High-capacity magazine ban">High-capacity magazine ban</a></li> <li><a href="/wiki/Right_to_keep_and_bear_arms" title="Right to keep and bear arms">Right to bear arms</a></li> <li><a href="/wiki/Small_Arms_and_Light_Weapons" class="mw-redirect" title="Small Arms and Light Weapons">Small Arms & Light Weapons (SALW)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;background-color:#DCDCDC;color:inherit;font-weight:normal;">United States Gun</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gun_law_in_the_United_States" title="Gun law in the United States">Laws</a> (<a href="/wiki/Gun_laws_in_the_United_States_by_state" title="Gun laws in the United States by state">by U.S. state</a>)</li> <li><a href="/wiki/Assault_weapons_legislation_in_the_United_States" title="Assault weapons legislation in the United States">Legislation</a></li> <li><a href="/wiki/Gun_politics_in_the_United_States" title="Gun politics in the United States">Politics</a></li> <li><a href="/wiki/Federal_Assault_Weapons_Ban" title="Federal Assault Weapons Ban">Federal Assault Weapons Ban</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <!-- NewPP limit report Parsed by 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