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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: 2045505" data-attributes="member: 239"><p>You got that backwards. You can shoot .223 out of either chamber. You shouldn't shoot 5.56 out of a .223 chamber.</p><p></p><p>The Wylde chamber was designed to shoot both. At least one AR maker had/has a wylde chamber option though I don't remember which one.</p><p></p><p>Personally I'd go with the 5.56 chamber as it is designed, among other things to handle much higher pressures than .223. IIRC (someone may want to look this up) .223 ammo is spec'd at max PSI of around 52K while 5.56 ammo is spec'd out at around 59 to 61K which means the 5.56 chamber has to be built to handle higher pressures than the .223 chamber. Plus with the longer leade of the 5.56 chamber shooting .223 commercial ammo out of the 5.56 chamber as is noted in the article and by SAAMI is not an issue.</p><p></p><p>Long story short don't shoot mi-surp 5.56 out of your .223 bolt action varmint rifle.</p><p></p><p>Here's a link to the SAAMI publications page. Lots of good info there: <a href="http://www.saami.org/specifications_and_information/index.cfm" target="_blank">http://www.saami.org/specifications_and_information/index.cfm</a></p></blockquote><p></p>
[QUOTE="Werewolf, post: 2045505, member: 239"] You got that backwards. You can shoot .223 out of either chamber. You shouldn't shoot 5.56 out of a .223 chamber. The Wylde chamber was designed to shoot both. At least one AR maker had/has a wylde chamber option though I don't remember which one. Personally I'd go with the 5.56 chamber as it is designed, among other things to handle much higher pressures than .223. IIRC (someone may want to look this up) .223 ammo is spec'd at max PSI of around 52K while 5.56 ammo is spec'd out at around 59 to 61K which means the 5.56 chamber has to be built to handle higher pressures than the .223 chamber. Plus with the longer leade of the 5.56 chamber shooting .223 commercial ammo out of the 5.56 chamber as is noted in the article and by SAAMI is not an issue. Long story short don't shoot mi-surp 5.56 out of your .223 bolt action varmint rifle. Here's a link to the SAAMI publications page. Lots of good info there: [url]http://www.saami.org/specifications_and_information/index.cfm[/url] [/QUOTE]
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