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The Range
Rifle & Shotgun Discussion
Which .223 Rifle?
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<blockquote data-quote="CAR-AR-M16" data-source="post: 899930" data-attributes="member: 204"><p>Just remember one thing. Most of the cheap, surplus ammo is 5.56 not .223. They may have the same case dimensions, but they are not loaded to the same pressure and their chambers (specifically the throat) is different as well. The Sporting Arms & Ammunition Manufacturers Institute (SAAMI) consider firing 5.56 in a .223 chambered rifle to be an unsafe combination (see <a href="http://www.saami.org/Unsafe_Combinations.cfm" target="_blank">http://www.saami.org/Unsafe_Combinations.cfm</a>). Here is another link that explains more about the difference between the two (see <a href="http://www.razoreye.net/mirror/ammo-oracle/AR15_com_Ammo_Oracle_Mirror.htm#diff" target="_blank">http://www.razoreye.net/mirror/ammo-oracle/AR15_com_Ammo_Oracle_Mirror.htm#diff</a>).</p><p> </p><p>With that said, I am sure that someone will come along shortly and say I am FOS and that they have shot 5.56 out of .223 chambered rifles for years and never had a problem. If so, that is great for them. I am just trying to give you the info from the maufacturers who make the guns and ammo so that you can make an informed decision on what you want to do.</p></blockquote><p></p>
[QUOTE="CAR-AR-M16, post: 899930, member: 204"] Just remember one thing. Most of the cheap, surplus ammo is 5.56 not .223. They may have the same case dimensions, but they are not loaded to the same pressure and their chambers (specifically the throat) is different as well. The Sporting Arms & Ammunition Manufacturers Institute (SAAMI) consider firing 5.56 in a .223 chambered rifle to be an unsafe combination (see [URL]http://www.saami.org/Unsafe_Combinations.cfm[/URL]). Here is another link that explains more about the difference between the two (see [URL]http://www.razoreye.net/mirror/ammo-oracle/AR15_com_Ammo_Oracle_Mirror.htm#diff[/URL]). With that said, I am sure that someone will come along shortly and say I am FOS and that they have shot 5.56 out of .223 chambered rifles for years and never had a problem. If so, that is great for them. I am just trying to give you the info from the maufacturers who make the guns and ammo so that you can make an informed decision on what you want to do. [/QUOTE]
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