Originally Posted by GlockMeister
If it's marked .223 then NO, you shouldn't use 5.56. But if it's marked 5.56, then it's safe to use either...
so icant use the brass to reload my 223 ? another thing why do we have 223 with mil crimps if the military usess 556? i mean noone replaces them in the semi reloads so why are they there?