The last time I went to the range, I had various feeding issues, and one failure to eject with the one magazine I have that came with my 40 cal. I noticed that my firing pin actually punched a hole through the primer, and the cartridge was stuck on the firing pin. I was of course firing the steel case ammo mostly, so I figured that may have been part of the problem. I fired one 7 round magazine of brass ammo with no problem. When I had my gun apart for cleaning, I put a loaded magazine into it, and I noticed that the cartridges in the magazine were canted to the left. I have a sneaky suspicion that this is causing some feeding issues, so I've made an adjustment to the outgoing feed lip on the left side of the magazine to see what happens the next time I go to the range. After making the adjustment, the ammunition appears to be lining up with the feed ramp much better than before. I plan to use only brass ammo the next time, and to only put 8 cartridges in the magazine to see what happens. Sometimes I feel that 9 and 10 cartridges cause some binding issues in the magazine, and feeding issues during the shooting process. I'll keep y'all posted on what happens.