I too, like Graybeard, just deprime them in the press. I made the mistake of poping off a live primer in the house (had it pointing somewhere safe mind you) in one of my handguns without hearing protection. NEVER AGAIN. Bringin empty cases to the range just to pop off primers is a hassle if you ask me. So I decided to just do it on the press despite everyones naysaying. Of course you dont want to ram that sucker out of there, just push it out. Ive also done this to primers that have been seated the wrong way in my Lee primer. When they come out there is barely a little scuff on the primer so I just reuse those and they work fine. But the key is to be very gentle.
Brian M.