With my pt111 g2 mill pro I fired 3 normal mags and one 15rd mecgar mag using 115gr steel cased winchester. I had 1 fte and 3 ftf's with this ammo. It also jammed up my 15rd mecgar mag (smacking it on the back fixed that). Normally my pt111 g2 runs flawlessly. I ran 3 mags through my shield with no problems.