So I go to the range today to work on getting rid of some bad habits, consistently shooting at 7:00 o’clock. Fired 150 rds of 180 gr. UMC no problems. The next 100 rds of the same ammo I had 3 FTFs, the slide failed to completely go into battery, luckily the primer strikes were light. It happened on different magazines, but was either the last round or next to last round. Reloaded the miss fired rounds back in a magazine and they fired fine. No issues with slide failing to lock back on the last round fired. I did try to push the slide home but: 1) the slide did not move forward, and 2) the striker had all ready released. Any thoughts?