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9/22/2017 12:11:25 AM
Posted: 8/28/2005 6:17:14 PM EDT
Can someone explain to me the diff between .223 ammo that I use in my RRA AR-15and NATO 5.56 ammo. From what I understand it can't be used in an AR-15???
Link Posted: 8/28/2005 7:32:51 PM EDT
It depends on your chamber. If you have a .223 chamber I wouldn't fire 5.56 ammo through it. If you have a 5.56 chamber you can use .223 and 5.56.

The difference is .223 is loaded to SAAMI specs and 5.56 is loaded hotter NATO spes and could KB a .223 chamber
Link Posted: 8/28/2005 7:41:07 PM EDT
There's always the Ammo Oracle for questions like this.

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