I loaded the mags with 15rnds and i noticed that from time to time 15,14,13th round will nose dive. The tip of the brass will hit the front edge of the magazine and can't push the round out with your thumb. The 12th round and rest ammo no problem ejecting out of the magazine. Like what i have said it doesn't happen all the time.
Just to let you know the last time i used it in our local match. I only loaded them with 12 rounds because the magazine spring looks weak if you put more than 12. We will see this Sunday.....