I'm not too sure on the distance, but it's in pretty close since he only shoots at an indooor range that is 75 feet. He's a relatively new shooter, so I think this is all about trigger control, myself. I pulled my Glock straight down to 6 o'clock when I first started shooting it years ago, and it has a very similar pull with stacking right before the break. Ammo weight can, of course affect POI, but I'm pretty sure it's him.

I just didn't want the poor guy banging his head against the wall if there was a known problem out there. Thanks.