We have a TX22 as a range rental. Conservative round count is easily north of 25,000 rounds fired. 361 days times 3 years times 50rds per box = 54,150 rounds. Can't be sure that it has rented every one of those days for the last three years, but then again on other days it been rented with 5-10 boxes on a given day.
Lotta friggen rounds either way. Replaced an extractor (worn out), striker bar ( broken), and a trigger spring LOST DURING A CLEANING. Pretty solid IMHO. Gun is accurate and like most 22 firearms does start to hiccup when it gets dirty 4-500 rounds or so. Doesn't seem to be too sensitive to any particular brands of ammo, pretty much eats all of 'em.
Damn decent gun at the price they're asking for them. Better trigger than those guns that are supposed to be "Perfection". Drop a set of fiber optic sights on them and you've got a hell of decent trainer and small game gun.
Have shot 4 P322's customers brought in to shoot. All of them jammed with multiple brands of ammo. 1-5 jams per mag with no discernible pattern. Most common was the new cartridge being loaded into the chamber nose diving into the back of the barrel just below the chamber. Just seemed to do it whenever the hell it wanted to. Don't know if the angle the fresh rounds are being introduced is too shallow, the magazine spring not being strong enough, or what. When it shot it did shoot accurately.
Would like to have one for to go with my P250, but not willing to be a test subject until the bugs are worked out.
Not a definitive sample by any means, just my personal experience with the two guns in question. ymmv