You have to go back about three years ago for the history of this. My first P22 was worn out by 4 or 5 thousands rounds. I re-profiled a few things and got perhaps 8 thousand out of it and traded it on a Ruger. What a piece of junk I thought.
Then someone said I lubed it to death. Lubed it to death????? Since when did regular cleaning, grease and Hoppes #9 kill a pistol. The problem I was told was that a 22 get fired a lot, true, and that spent powder and carbon bits collect in the grease and oil, true, etc. And with a zinc slide and frame.......this combo will eat the soft metal up. Additionally there is ony 1/8" 0f frame rail and slide groove engaged when the slide is all the way to the rear but the hammer is still pressing the slide up with full force. This is where the removal of material from the rear of the breech came from in an attempt to stop that pressure/wear when so little material was engaged. It worked too. So I proposed buying a new pistol and firing it until it died. I had been very regularly cleaning the first one. WE discussed this and that way back with ideas for what to do to extend the life of the pistol.
A gunsmith gave me a powdered mixture of moly and teflon. I washed the new pistol out thoroughly, blew dry, sparyed on Remington Remoil with Teflon, blew dry. Rubbed on a touch of dry, powdered moly/teflon to wear points and started shooting. This after carefully measuring all critical components where wear could be expected. At 27,000 rounds there was exactly zero wear to the frame rails and slide grooves. Only cosmetic wear to the finish on the barrel sleeve and along the way I got all the other "mods " together simply to address issues my pistol and others were having. The pistol stays much cleaner now and wear is a thing of the past. Of course the rounded trigger bar ears will always dent the slide a bit but as long as the front edge isn't sharp the slide will last forever.
There is no use trying to apply much moly, it will not build up. It puts on a thin coat. I use a Q-Tip. Then I hand cycle to polish it all in before shooting. I don't think the zinc even touches now. Graphite collects moisture, so don't use it. KG is the only place I know you can order gun grade Moly. M1911