Some models of scopes have L arrow, while others have R arrow. Remove the windage cap and you need to move the scope to the right the amount required. Most scopes are 1 click=1/4" at 100 (it should say on the adjustment knob) FYI (with 1 click=1/4" at 100), target is 100 yards 4 clicks will move an inch, target is 50 yards 8 clicks will move an inch and target is 25 yards 16 clicks moves an inch.