I loaded up 3400 rounds on a Mark 7 and the powder measure worked itself lose and I didn’t notice it because I’d never had the problem. I took the ammo to a major the very next weekend. The first stage was a unloaded start so I wait for the beep lid the gun and “poof” but the RO didn’t stop me so I pulled the slide to clear it and put a new mag in, I knew it wasn’t going to chamber another because bullet barely cleared the chamber needless to say the RO had no clue what to do and I couldn’t stop myself. After all done I ended up taking a 0 on a 150 point stage