I've heard that it's got tight pockets but man what a PITA. I had about 50 once fired S&B brass cases that I tried reloading. I did about 20 in the progressive press and decided I didn't like the way the primers were feeling. I did the remaining 30 or so with the RCBS hand primer. I was careful but they started off real tight and then just let the primer go in quickly... I swear I can't believe one didn't pop on me.... two were pressed in so hard I could see the dimple mark from the anvil. No more S&B for me... I'm done with them. Never had any problem like this with any other brass.