400 rounds, 40 grain CCI Maxi-Mag, no problems after I learned to how to double-check I've seated my rounds fully, and that I'm prone to not seating them right when trying to load with thick gloves on. So, no ammo failures, just a shooter failure.
50 rounds, 30 grain CCI VR Max, 2 failure to eject the brass, whatever you call that, I'll look up the term tomorrow. (Someone dropped that box in as replacement for shooting my ammo. Very nice of them, and now I know that the manual was right when it emphatically stated I shouldn't use low-grain ammo. Also, I know that loading pointy polymer tips pricks my thumb even through thick gloves; hollowpoint hurts less.)
I think I need to clean the gun tomorrow, too.