After cleaning my ejector firing pin etc. Had the worst day ever with my Kimber CUC2. But it is not the Kimber. I hope. First magazine (used mag release to load all first rounds with no problems) 2nd round ftf round never left the magazine. 2nd magazine 2nd rnd same thing. Im beginning to think I messed something up. 3rd magazine 4th round same thing. 5th magazine 3rd round same thing. Last round of this box of 50 Remington UMC 230 grain fmj stove piped. Then I ran 100 rounds of American Eagle 230 grain fmj flawlessly. Im thinking it don't like that ammo. Never shot it before in my Kimber won't buy it again for that caliber.