Problem was not fixed in 2012 I had two p22 blow apart the same day one dealer handed me anonther one same day 2 nd one did same thing. Handed it back to him for a refund
Exactly my experience with the PT22 I owned very briefly. The pistol wouldn't cycle standard velocity loads. I tried CCI Mini-Mag 36 gr. HP's and it was working fine-until the slide flew off landing about six feet forward of me on the floor of the indoor range! Boy did that stop shooting.
I would not carry ANY .22 LR as a primary defense weapon because even the best .22 rimfire ammunition has a very high failure to fire rate compared to centerfire cartridges. The less chance of click instead of bang, the better.