I recently had a new match KKM barrel fitted to my SA 1911 by a reputable bullseye smith. I broke the barrel and slide in with 200 gr LSWC and a light load of 3.4 gr of BE. No issues for 250 rounds. Last night, before I started loading some Zero 185 gr JHPs, I made some dummy rounds just to make sure they would cycle and to check the setback. The dummy rounds were loaded to COL 1.205 with a .468 crimp. I'm also using a 12# recoil spring. When I release the slide stop to load the rounds and then eject them, I was getting bullet setback that ranged from .004-.008. I have read that there are different magazine follower that might help. Some guys say they cut 1-2 loops off the springs. Any one else have these issue or have some suggestions for a cure?