Came across your Forum and you seem to be discussing something I need some advice on. I recently purchased a Walther P-22, .22 cal pistol. I shot 40 gr. Federal Champion ammunition mostly. I lightly lubed with hoppes or remington, rem Oil w/teflon every 250 rounds and completely broke the pistol down for cleaning every 500 rounds. tetra gun grease was used on the slide and frame rails. Well, by 4 - 5000 rounds the slide was worn out, so much slide lift the hammer would no longer cock. By filing the hammer cock notch so the sear would engage earlier I managed to get her to go about 8,500 rounds when the slide was so worn even the slide stop catch wouldn't catch.
Posting at RimFireCentral.com there is a lot of discusssion re. this pistol and associated problems. One consensus from a number of users is that a dry lubricant should be used as these guns have a cast zinc slide and rail system. Operation of the pistol's slide is similar to my 1911's. The theory being that oil and grease catch dirt, debris and powder residue making an abrasive mixture that eats up the alloy slide.
I bought a secong gun as a test gun. It was washed of all oil, sprayed with Rem oil/teflon and blown dry with compressed air. My gunsmith gave me some black/silvery powder similar to graphite that he labeled moly/teflon. He doesn't know what this is only someone in the military dropped off some for him to try one day.
I applied this with a q-tip to the slide grooves, frame rails, hammer face, underside of the breech block that cocks and slides on the hammer and barrel sleeve and slide return spring and bar. I carefully measured all critical components, grooves, rails, etc with a digital caliper to nearest 1/10000"
Every 500 rounds the gun is broken down and cleaned. It stays really clean compared to the previous oil and grease cleaning procedure. The breech face, rear chamber, mag housing etc are sprayed with Birchwood Casey gunscrubber, compressed air, rem/oil/teflon, compressed air and the heavy wear areas with the black powder never cleaned just more black powder rubbed on. At appx. 4000 rounds there is no measurable wear anywhere.
Anyone know what this might be? Thanks, 1911M
Test gun at 4000 rounds, note: absolutely no wear to frame rails and silvery color of powder lubricant. This picture taken after 500 rounds, no cleaning as of yet and no cleaning at all to rails, hammer sear etc since the gun was initially cleaned. I need to get more of this stuff.
