Ditto on the lupold rings and bases. Mount the scope and bore sight (laser if available) head to the range and at 50 yards fire 1 shot. With the gun locked in a firm clamp (I use the Lohman sight vice, its cheap and easy) put the scope X hairs back onto the bull then dial the scope over to where the 1st bullet hit and the gun is then zero, raise the hairs about 2" from that spot and move to the 100 yard and fire 3-5 shot groups and fine tune as necessary. Then move to the 200 and 300 yd and do the same. Have fun