* The gun will fire and cycle the first 5 rounds from each magazine with no problem. The sixth bullet will not chamber and ends up with the case denting you see. I’ve run at least 10 magazines through the gun and the problem repeats identically each time. I did not clean the weapon although it was clean before using it. I used both CCI Mini-Mags and Federal bullets and the problem was identical with both ammo types. There have been less than 600 rounds in total through this gun since I originally purchased it new. Never had this issue before. Very strange. Any ideas?