Anyone use this brass for 10mm? I have 2 different headstamps, one is "nny" & the other is PPU. I had a problem with the nny stuff, one was a casehead separation, and 3 case bulges, scared to try the PPU. The nny had only been reloaded 1 time, so fired twice. All of my other brass runs great, anyone use this brass with good results? Thanks for any help. 165gr. FMJ 10.4gr. Bluedot 1.26 OAL Colt Delta Elite.