Make sure the scope is securely mounted on the rifle. Place the rifle in a secure mount, remove the bolt, look at a target bulls-eye (thru the bore) at 100 yds. Set the bullet drop compensator (the large top knob) at 1 to 2 Adjust the windage/elevation screws to the center of the bulls-eye. Or...use a bore sight. This should get the rounds on the paper. At 100 yds one click is 1MOA(minute of angle). That is....one click will move the point of impact 1 inch. Fire 3 rounds and adjust accordingly.Repeat as necessary. I really like this little scope FWIW.
Gunny