RE: I need serious help with my slug gun!!!! PLEASE!!!
I have a mossberg 500. I put the Bushnell Banner scope on mine. The only difference is my scope is a 1.5-4.5 x 32. After bore sighting it and then taking it to the range it took little adjustment to get it right. I would say there might be something wrong with the scope. I think deerslayer is right, try something within the 1-4 ballpark.