I got a truglo universal tru bead sight for mine...factory sights on my Super X2 Turkey gun would make it shoot high everytime and no adjustment. Almost cost me a bird once...but the new sight was flat on the vented rib and POA and POI were centered at that point. I did once have an IC choke that shot everything off center, don't have that trouble with my current .660 Rob Roberts Final Strut. Guess it's hard to say for sure with three variables that could cause your shot to drift, not including the shooter! LOL