Just bought one, used, but it looked barely used. I was shooting really well for me, but after about 60 rounds of S&B 230 FMJ, started to experience feed failures, and twice the slide did not lock back in the last ~25 rnds. Problems occurred on both mags. I cleaned it when I got home, it was dirtier than I expected, maybe there was too much oil on it from the last owner, but it didn't look like it when I took it apart when I first bought it. Gonna wipe it real dry before my next range trip, hope it's just that.