there are lots of issues with an air gun ... a springer.. is no different... with pellets as cheap as they are and according to the range you want to shoot, getting the scope to line up east and west is much more critical then North and south at first. First is you have to mount the scope so that it prints on paper.. then you need to check for consistency in flight.. meaning you can't shoot one pellet and expect that to be your average.. Ill take a target with 20 dime sized targets. and take my time and shoot groups of five... if the groups are not tight.. touching each other then there is a problem... of you can get your groups, no matter where they are on paper tight.. in a quarter sized group, then you can then adjust ( move the point of aim ) toward the bull. but not all ammo flies the same way, and a gun that shoots over 1000 fps is not very accurate.. also the type of pellet the weight, skirt size and waist size all play into an accurate air gun.. Iver been shooting air guns for many years, and have invested thousands into the sport..