I too would go with the CCI primers. I don't know if they are thicker or tougher than other standard primers but I've never had a problem with them. I recently had a Fed 205 pierce in a 223 shooting ball powder, that has never given a problem before. May have been a small defect in that primer but it does make one a little leary.The Rem 71/2 and CCI 450 have reputations of being tougher than other primers with the CCI mil spec primers supposedly the toughest of all. Finally to be honest I would probably buy all the primers I could even if I had to get some of both.

Last edited by quarterboredave; 04/22/09.