Went and got a 250 rd. value pack at Bass Pro, and went to the range today. It seems to have a snappier recoil than most commercial .40 FMJ rounds, but there are a lot of sparks. I mean A LOT. After the 3rd on I took the handgun back apart to make sure I didn't have lead stuck in the barrel or something. It shot just fine, in fact one of my better pistol groupings I've ever fired. I was just curious if anyone had run into something similar with other UMC ammo.