Is the stock adjustable on that gun? improper fit is a huge cause of poi issues with shotguns, basically without a proper fitting gun you are not looking straight down the barrel. Different chokes and loads can change impact as well. The shape of you head will determine how you would need to cast the stock to one side or the other, of course if you want to shoot a sight then this is not a necessity, but a proper fitting gun will go a long way.