i use 8x57 ppu brass to make a 9.3x57. this was 2 years ago and i don't have any problems. i have some once fired 30-06 ppu brass(this year) that i'm about to make a 7.65x53 argie this week or next. i have a 100 cases of 7.65x53 agrie ppu that i bought this year, but they going to my sons' 7.65x53 argies.