Re: Primer Stuck in RCBS hand priming tool
I've had this happen & here's how I've dealt with it. I'm not saying this is the best way, the only way or the safest way... You're on your own and your mileage may vary.
The problem is that the brass can't be removed from the holder with the primer stuck that way, and the whole assembly can't be removed from the priming tool because of it's design (the primer rod has to be removed first, but obviously this isn't possible in this case).
So - what I've done is very slowly and deliberately continued to press the damaged primer up into the primer pocket (squishing it). Occasionally, I've had to rotate the brass in the shell holder and press (squish) it several times before the primer is in far enough to pull the brass from the shell holder.
Can it go off? I've always assumed that it can. Safety glasses, pointing it in a safe direction, wearing gloves and wrapping the whole thing in a towel to contain it if it detonates could mitigate it if it does go off. Mine never have, and I've dealt with this perhaps 10 times over 7000 rounds.
I've always discarded the brass / squished primer, but as noted, once it's freed up, you could try gently depriming it (again, knowing that it could go off). I've deprimed non-damaged primers successfully (never detonated one) but again, I've always assumed that it could go off and take precautions.
Why have I handled it this way? Weighing the risks / rewards, I felt OK that if it detonated I wouldn't get hurt and nothing would be damaged - and I'd be back up and running in a matter of minutes.
The cause of mine have always been crimped primer pockets where I didn't do a good enough job during prep. Also, it's always been .223.