So, I have a Glock 44 that was reliable with just about everything I shoved through it. I then put a red dot on it with a Strike Industries SPUR mount. I knew going into it that the added weight would make a difference and I would have to run hotter ammo. It ran very well with older CCI Stingers and was very accurate. I then put a Glock Performance trigger in it and bought some more Stingers. The pistol then went to not being reliable at all. Failures to feed & eject were the order of the day, just like the lower velocity ammo would be. Nearly 2/3rds of a magazine were failures. I took out the trigger and put the old one back in, same thing is still going on. I think I got a bad batch of CCI Stingers. I have only one box of the older Stingers left and will try them this weekend to verify, but I wanted to know what the other members here thought.