cant say on the PF, but the P11 I had ran fine for a few thousand. Can't remember any problems with it except with Wolf and ammo. The wolf caused FTE, common with lighter loads, but good with hollowpoints. Never had a problem, but the recoil was insane. Besides a superblackhawk with full power 44 mag, may have been the hardest kicking gun I ever fired. I know you mentioned no concern over the trigger, but the Keltec trigger is pretty strange if you find yourself looking at a p11. Very heavy, then when you think it broke, and nothing is going to happen, you keep pulling and and it gets squishy, and you still think its broke, then you pull some more, and if fires. The PF was an improvement, but I like the p11's. I always thought the PF was too light for a pocket gun. I did fire an old no longer published load with it, using Unique powder, getting a 124 grain bullet to 1200+ from its 3' barrel, and no problems with it.