Gun used was a Gen4 G19, 250 rounds of Remington UMC 9mm Luger and zero issues using this ammo. I notices as I was shooting some rounds had a much louder bang than others and quite a few random fliers but for the most part the ammo did good at putting holes in paper at 7 yards. I didn't go to any extreme as to measure the bullets or any thing like that bought a box from walmart loaded 15 in a magazine and pulled the trigger and it made holes. Most accurate ammo no but good enough for the range or zombies

There have been a few threads on UMC in the past month or so...

I've shared my feelings in them. UMC is a KB waiting to happen. Bullet setback is rampant.