Thanks for the help going to try 450 with the Peterson Brass how much less powder would I need
I read an article a few years back that said the BR-2 and the 200s were the same primer. The BR-2 was just the ones produced when the more experienced work crew was on the clock. Thanks for this info on 450/BR-4.Cci 450’s (and br-4) have the same amount of priming mixture in them as a cci 400. Only thing that makes them “magnum”is the thicker cup to withstand pressure. No change in the load is needed. The 450 and br-4 are identical by the way. Don’t waste money on the br-4.