I had bought a box of 250 rounds of OMC 9MM ammo and took it to the range to pass it through my PF9. It wasn't long before I started getting a lot of stovepiping and FTE's. Very frustrating. Examining the cases I noticed the sides of the case had lots of small scratches spread out all over. Not sure if they were scratches, as they could have been brass stretching. If the cases were expanding too tightly in the barrel, that would account for the inability to eject. This is the first time I've had any sort of ammo problems with this gun, and have put somewhere shy of a thousand rounds through it with no problem. I've puts a few different brands through it, but the case markings made me think it was more brass than my gun. Anyone else has this problem?