i have had my 1911 ruger for a year or so and i may have maybe a 1000 rounds thru it always cleaned after a trip to the range last couple if trips i have had the slide fail to close all the way after 7-8 mags thru it i usually use pmc or win white box ammo tried many different mags does it on first or second round if i pull back on the slide a 1/4 -1/2 inch and push forward the round will chamber and usually i can run the rest of the mag n/p also i am not the best shot in the world but i am not the worst either .....i am better than most and i have a few 1911's springer mil spec 1980's colt rem r1 and a kimber p/c II.......but i have noticed the accuracy being off up close its ok after 15 yards it gets iffy and if i switch to the colt or the springer im on the bullseye any help would be appreciated