is it normal to have a point of impact shift of 1 1/2 inches when i put my moderator on...with the adaptor only it shoots 1 1/2 inch higher,and 1/2 inch left,at 50 yards...is this normal?...i also see small streaks of leading on the inside of my sumo muzzle...all shots are consistant tho...if pellets were clipping wouldnt the poi be irratic?