So I ran a few mags through my Glock 23 today, and it seems to be shooting high. What should I look at? Normally I easily keep under 6" groups. Maybe I'm just having an off day on pistols...I put 12 mags through the AR just fine. I wasn't really planning on shooing my pistol, so all I had were three mags with 180gr Federal HST (only shot two so I wasn't carrying an empty gun).