I am going to be setting up to reload 30-06 and .223(5.56) and in looking at primers see that there are "small rifle primers" and then others designated specifically for .223 or for 5.56. Will any small rifle primer work in .223 or 5.56? Or, do you have to use primers specifically made for the brass itself? Like 5.56 primers won't work in .223 or visa-versa? Or will they work in the other brass? I know that they are close, but not identical and that a gun chambered for 5.56 can also shoot .223 but not the other way around. My AR-15 is 5.56. Are the primers labeled "Military" any better or worse than plain jane Small rifle primers? Thanks for any feedback. Wanna kill these ads? We can help!