Shot close to 300 rounds and only had 2 failures to return to battery. The failures only occurred after shooting a boatload of TulAmmo, with the rest being Remington UMC flat-nosed 147-grain FMJ. The gun was dirty as hell and it was a wonder why it didn't fail more often. I also saw where else to lube the gun. I can't wait to take it back to the range.