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Old May 28, 2011, 08:53 PM   #1
Join Date: March 13, 2011
Posts: 50
223 vs 5.56

Is there a diffrence? I have been told there is no diffrence. I have problems with my AR failing to feed on occassion. the problem isnt always there but when it is there it does not go away throughout the shooting session. Last weekend I shot a 30 rd mag just fine and after that it FTF every time. the bolt was not traveling back far enough to feed the round on every shot. I have been shooting 223 but the gun is rated for 5.56. cant find 5.56 at any LGS. Is it the ammo or the firearm?
JRP2 is offline  
Old May 28, 2011, 09:38 PM   #2
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Join Date: May 14, 2008
Posts: 108
Probably not the right forum for this (Art of the Rifle would be better).

That being said, according to SAAMI, .223 Remington is safe in a 5.56mm NATO chamber, but not the other way around. It's probably your rifle.
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Old May 28, 2011, 09:50 PM   #3
Join Date: March 13, 2011
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