[Steve Smith]

Run your rear sight all the way to one side. Count the clicks to the other side. Divide by two. Go that many clicks back to the center. Make a fine line with a paint marker or fingernail polish down through one of the hash marks and on to the sight housing. That is your Mechanical Zero. Shoot the rifle, and see if it really hits to one side or the other. Be careful not to cant the rifle. If it does truly hit to one side, THEN move the front sight to adjust it. Don't move your rear sight again until you get your front perfect.