I have a 3 inch .45 Kimber Ultra Carry II subcompact. Ive been starting to get this problem happen frequently and by frequently I mean like once a mag frequently. Ill be shooting along happily when suddenly after firing a round, the slide will cycle through and then stop about half an inch short on the return trip so that its partly open. The spent casing from the last round fired did not eject and its still 3/4 the way in the barrel. The next round in the magazine is underneath the spent casing in the mag about 1/4 pushed forward out of the magazine. Immediate action drills dont help me here. Racking the slide doesnt help because the spent casing still lodged in the barrel and the new round are trapping each other from moving. So in order to correct the problem I have to lock back the slide, push the spent casing fully into the barrel, push the next live round fully back rearward into the magazine so that the primer is against the rear of the magazine, hit my mag release, and then reach in the ejection port and push the magazine down about a centimeter to get it drop out. Then I can dump out the first spent casing... Very annoying. Im using one 7 rnd standard Kimber Magazine and two 7 rnd wilson combat 1911 magazines.This problem happens with all three mags. I was shooting UMC brand 185 gain ball ammo which I have never had a problem with. After some testing Im pretty sure the ammo isnt the problem either. There have been 700 rounds fired through this gun. A gun savy friend of mine said it might be due to limp wristing it or lack of oil on the bushing or slide. The gun is properly oiled and I keep it very clean and well maintained. Anyhoo, as to limp wristing, Im not quite so sure as this seems to be a rather new problem for me, that and the fact that 2 other people which much bigger hands than I shot it as well and experienced the same thing more than a couple times. Im actually thinking about selling this gun to a very eager friend and i experienced this problem the other day when I took it out to shoot one last time. I dont want to sell my buddy a defective gun and if something needs to be fixed Im going to have it fixed before selling it. What do you all think might be the problem?