Loaded some 9mm and 45 this Sunday afternoon.
Normally you back off a touch in powder when you go from SPP to magnum. Your ammo maybe a bit warmer then it usually is.Just loaded 200 rounds of 9mm with 124gr HPCB xtreme bullets and 5.6grs of power pistol.
I usually use cci500 spp but accidentally used cci550 magnum primers. Everything I have read, it seems like it should be fine. It's for my glock 19x.
Yes, I know. I just grabbed the wrong primers by accident. Thanks, I will find out, should be ok though.