Is it me or are the primer pockets on S&B 9mm brass hard as He!! to seat a new primer in? I have a lot of range brass and I had a devil of a time getting the S&B brass to re-prime. I didn't have that problem with the S&B .45 brass however.
Is there anything typically catastrophic about a primer detonation while seating? Or is it just a loud bang that scares the begeebers out of you?