I bought a super carry ultra this weekend. My first kimber. I immediately went to the range. The first 50 rds was 230 gr fmj and not a single problem. I then switched to reloads of win 231. Ran fine for first 75 or so, then started to ftf. It ejected and fed fine, but would close completely. I chalked it up to the fouling of chamber (win231 is fairly dirty). I hope that was all it was. Loved the guh though. Very accurate out to 15-20 yds.