I found that I was shooting just left of center around 6-8 inches at 50 feet or so.... I was not shooting that way with a sig 220 or glock 19.. I found that if i shoot the m+p with my second pad on my finger i was amlots right POA each time... this could be beacuse im pulling the gun right with the new way i hold the trigger....or my trigger pull could just be messed up on the m+p..... What pad of your finger do you use to shoot with your m+p? and is the way you shoot your m+p any different than that of other pistols you shoot?