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	<id>https://firearmwiki.com/index.php?action=history&amp;feed=atom&amp;title=Rim_Lock</id>
	<title>Rim Lock - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://firearmwiki.com/index.php?action=history&amp;feed=atom&amp;title=Rim_Lock"/>
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	<updated>2026-05-02T08:11:41Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://firearmwiki.com/index.php?title=Rim_Lock&amp;diff=397&amp;oldid=prev</id>
		<title>Admin at 08:10, 5 November 2019</title>
		<link rel="alternate" type="text/html" href="https://firearmwiki.com/index.php?title=Rim_Lock&amp;diff=397&amp;oldid=prev"/>
		<updated>2019-11-05T08:10:15Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 08:10, 5 November 2019&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l2&quot; &gt;Line 2:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:Rim-Lock-Rimlock-Diagram-Illustration-Malfunction-Firearm-Wiki.gif|frame|right|An illustration describing rim lock on rimmed and semi-rimmed firearm cartridges. The left side shows proper stacking of rounds, allowing for reliable feeding. The right side shows rim lock, where the rim of the first round has become obstructed by the rim of the following round, causing a jam.]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[File:Rim-Lock-Rimlock-Diagram-Illustration-Malfunction-Firearm-Wiki.gif|frame|right|An illustration describing rim lock on rimmed and semi-rimmed firearm cartridges. The left side shows proper stacking of rounds, allowing for reliable feeding. The right side shows rim lock, where the rim of the first round has become obstructed by the rim of the following round, causing a jam.]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;'''Rim lock''' (also written as &amp;quot;'''rimlock'''&amp;quot;) is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;a phenomenon &lt;/del&gt;that &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;occurs &lt;/del&gt;in magazine-fed guns that fire rimmed or semi-rimmed cartridges. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Some examples &lt;/del&gt;of such cartridges include [[.22 Long Rifle]], [[.22 Magnum]], [[.357 Magnum]] (rimmed) as well as [[.32 ACP]] and [[.38 Super]] (semi-rimmed).&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;'''Rim lock''' (also written as &amp;quot;'''rimlock'''&amp;quot;) is &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;an issue &lt;/ins&gt;that &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;can occur &lt;/ins&gt;in magazine-fed guns that fire rimmed or semi-rimmed cartridges. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Examples &lt;/ins&gt;of such cartridges include [[.22 Long Rifle]], [[.22 Magnum]], [[.357 Magnum&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;]], [[7.62x54r&lt;/ins&gt;]] (rimmed) as well as [[.32 ACP]] and [[.38 Super]] (semi-rimmed).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The issue is that in a magazine-fed firearm, particularly when involving a detachable magazine, the top most round in the magazine can sometimes slip backward behind the rim of the next round, causing the gun to seize up and be unable to feed the round from the magazine.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The issue is that in a magazine-fed firearm, particularly when involving a detachable &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;magazine or internal box &lt;/ins&gt;magazine, the top most round in the magazine can sometimes slip backward behind the rim of the next round, causing the gun to seize up and be unable to feed the round from the magazine&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. Alternatively, the user can easily load a round in this way by accident. This is not really an issue in firearms with a tube magazine because the rims have no way of grabbing each other and locking up.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;== Preventing Rim Lock == &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt; &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;In most firearms, rim lock is relatively easy to avoid. By taking care to make sure that each round's rim is sitting in front of the previous one, this should eliminate most if not all possibility of rim lock. However, it may be the case that some magazines are not designed to properly allow for this but give just enough room for cartridges to lock together and still cause issues. Overall, paying attention during loading will resolve almost all issues of rim lock&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

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&lt;/table&gt;</summary>
		<author><name>Admin</name></author>
		
	</entry>
	<entry>
		<id>https://firearmwiki.com/index.php?title=Rim_Lock&amp;diff=395&amp;oldid=prev</id>
		<title>Admin: Created page with &quot; File:Rim-Lock-Rimlock-Diagram-Illustration-Malfunction-Firearm-Wiki.gif|frame|right|An illustration describing rim lock on rimmed and semi-rimmed firearm cartridges. The le...&quot;</title>
		<link rel="alternate" type="text/html" href="https://firearmwiki.com/index.php?title=Rim_Lock&amp;diff=395&amp;oldid=prev"/>
		<updated>2019-11-05T06:03:24Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot; File:Rim-Lock-Rimlock-Diagram-Illustration-Malfunction-Firearm-Wiki.gif|frame|right|An illustration describing rim lock on rimmed and semi-rimmed firearm cartridges. The le...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&lt;br /&gt;
[[File:Rim-Lock-Rimlock-Diagram-Illustration-Malfunction-Firearm-Wiki.gif|frame|right|An illustration describing rim lock on rimmed and semi-rimmed firearm cartridges. The left side shows proper stacking of rounds, allowing for reliable feeding. The right side shows rim lock, where the rim of the first round has become obstructed by the rim of the following round, causing a jam.]]&lt;br /&gt;
&lt;br /&gt;
'''Rim lock''' (also written as &amp;quot;'''rimlock'''&amp;quot;) is a phenomenon that occurs in magazine-fed guns that fire rimmed or semi-rimmed cartridges. Some examples of such cartridges include [[.22 Long Rifle]], [[.22 Magnum]], [[.357 Magnum]] (rimmed) as well as [[.32 ACP]] and [[.38 Super]] (semi-rimmed).&lt;br /&gt;
&lt;br /&gt;
The issue is that in a magazine-fed firearm, particularly when involving a detachable magazine, the top most round in the magazine can sometimes slip backward behind the rim of the next round, causing the gun to seize up and be unable to feed the round from the magazine.&lt;/div&gt;</summary>
		<author><name>Admin</name></author>
		
	</entry>
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