I'm another that has a older design PT-22 that has never failed. It in fact hasn't failed while shooting mostly Rem Yellow Jackets, a round Taurus specifically recommends against. I have carried it on occasion, years ago as a pocket gun, since the RYJs would be one of the better .22LRs in that regard. Now it's just for fun and in this it excels.
Join the NRA/ILA
I am the weapon; my gun is a tool. It's regrettable that with some people those descriptors are reversed.