I generally don't read this forum, and apologize if this is something that has been beaten to death here, but is there a real difference in ammo identified as .223, versus ammo identified as 5.56? Read some comments on 5.56 ammo listed in Cheaper/than/Dirt, and those posts made it seem like there is a REAL danger in using 5.56 in a firearm identified as .223.

I thought that the ammo was the same. Would appreciate your comments on this.

Thanks.
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