I was shooting a Mk III 22/45 Saturday, and it was having quite a few problems. Many times, it would have several failure to feed in one mag, and sometimes a failure to eject (the casing would get caught in the bolt on its way out). I was shooting Winchester 555. I know it is shitty ammo, but it had problems with CCI mini-mags as well. Normally I could just cycle the bolt and it would feed the round and keep shooting. It was a chilly day, about 40 deg F, I know that isn't freezing on any standard, but I think it is the coldest weather the weapon has been shot in.
This is the way it was cleaned before this trip-
––-bolt scrubbed spotless, as well as the barrel because it was removed from the pistol grip assembly
––- for the trigger and other parts in the grip, I flushed them with boiling water then blew it all out with compressed air.
––- everything was oiled with ATF
Any ideas? The pistol has not impressed me very much, am I doing something horribly wrong in cleaning?