I have a Springfield 9mm stainless target, use Tripp 10 round 9mm mags. Only had one FTE in over 7,300+ rounds. Also had a stock Springfield 9mm barrel re-bored for 38 Super. Never had a problem shooting 38SC with Tripp mags. Never tried shooting super. My 9mm reloads have a 1.140 OAL. My 38SC reloads have a 1.222 OAL. Use 115gr or 124gr MG CMJ round nose bullets. Never hollow points. The Springfield is out of the box, other than a green fiber optic 0.125, trigger job, and VZ grips. I just installed a Dawson Precision 1911 Alum. gap magwell with flat mainspring housing, have not shot since. Only use this gun in 9mm for shooting IDPA which is seldom. Gun is very accurate in either caliber. From a bench at 25 yds. 1.1" or less 5 shot groups consistently. On a bench at 50 yds.1.5" or less 5 shot groups consistently. Gun was purchased 5 years ago.