Mine was sent back to Smith & Wesson with feed issues. When i got it back it was perfect. Now with about 600 rounds fired I am beginning to some issues again. The gun is clean, using 10 rd shorty mags and CCI mini-Mags at the moment. The round does not completely load into the chamber and bends to about a 30-45 degree angle at the bullet/case mouth leaving the bolt open about 1/2 inch. I can drop the mag and the bullet easily fails out. Anybody seeing the problem or have an idea whats causing it. It's happening once every 2 or three mags.