explain parallax

[Catfish]

Jack is right, but if you really want to see how much it can effect your point of impact put your rifle in a vice and zero it on a target at the range you want to check. Once your rifle is zeroed and locked in place move up and look through your scope. By moveing your eye left and right you will see the point of aim change on the target, this is due the the parlex of your scope. You will also nothice that if you hold you eye in the same posision thatyou point of aim will not change, so if you mount your gun exactly the same every time you will have alot less problem with parllex.