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The Water Cooler
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For those members NEW to AR's...
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<blockquote data-quote="Werewolf" data-source="post: 2045327" data-attributes="member: 239"><p>Many otherwise knowledgeable firearm enthusiasts quite often do not know the differences between Rem .223 and NATO 5.56 ammunition and the chambers that they are designed to fit in and that worse case it can be dangerous to shoot 5.56 NATO out of a spec .223 chamber.</p><p></p><p>Since there is a push to bring in new members and they are especially prone to the misconception that the .223 and 5.56 NATO calibers are interchangeable I thought it would be appropriate to post the facts about why they are not interchangeable. Below is a link to a very well written article that explains the differences between the two chambers, the differences between the two cartridges and why it can be dangerous to shoot 5.56 NATO out of a .223 Rem chamber.</p><p></p><p>Though I encourage those new to AR's to read the entire article a quick summary of the issue boils down to:</p><p></p><p></p><p></p><p>SAAMI's interchangeability table states that you can shoot .223 out of a 5.56 NATO chamber but not vice versa.</p><p></p><p>There's more to it than that but leade is the main issue.</p><p></p><p>Here's the link to the article from the Guns and Patriots section of the Human Events web site: [h=1]<a href="http://www.humanevents.com/2011/02/15/223-remington-vs-556-nato-what-you-dont-know-could-hurt-you/" target="_blank"><span style="font-size: 12px">.223 Remington vs. 5.56 NATO: What You Don’t Know Could Hurt You</span></a>[/h]</p><p></p><p>For those new to AR's what this all means is you can shoot .223 Rem cartridges out of both a .223 spec chamber and a 5.56 NATO chamber without issue but you should not shoot 5.56 NATO out of a .223 spec chamber.</p></blockquote><p></p>
[QUOTE="Werewolf, post: 2045327, member: 239"] Many otherwise knowledgeable firearm enthusiasts quite often do not know the differences between Rem .223 and NATO 5.56 ammunition and the chambers that they are designed to fit in and that worse case it can be dangerous to shoot 5.56 NATO out of a spec .223 chamber. Since there is a push to bring in new members and they are especially prone to the misconception that the .223 and 5.56 NATO calibers are interchangeable I thought it would be appropriate to post the facts about why they are not interchangeable. Below is a link to a very well written article that explains the differences between the two chambers, the differences between the two cartridges and why it can be dangerous to shoot 5.56 NATO out of a .223 Rem chamber. Though I encourage those new to AR's to read the entire article a quick summary of the issue boils down to: SAAMI's interchangeability table states that you can shoot .223 out of a 5.56 NATO chamber but not vice versa. There's more to it than that but leade is the main issue. Here's the link to the article from the Guns and Patriots section of the Human Events web site: [h=1][URL="http://www.humanevents.com/2011/02/15/223-remington-vs-556-nato-what-you-dont-know-could-hurt-you/"][SIZE=3].223 Remington vs. 5.56 NATO: What You Don’t Know Could Hurt You[/SIZE][/URL][/h] For those new to AR's what this all means is you can shoot .223 Rem cartridges out of both a .223 spec chamber and a 5.56 NATO chamber without issue but you should not shoot 5.56 NATO out of a .223 spec chamber. [/QUOTE]
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