I don't own a "bore scope" or a laser for sighting in rifles. I set the rifle up on sand bags, remove the bolt and adjust the rifle until the bullseye is centered in the bore. Without allowing the rifle to move itself I then move the crosshairs until it is on the bull. Then, test fire one round. If you're certainly it was a good trigger pull and the crosshair was "on" when the trigger broke, keep the rifle immobile while you adjust the crosshairs to be dead on the bullet hole. Another round or two will verify the zero. Very little ammo used. I've done this for other people and they were amazed, but it's really very simple. You're just adjusting the scope to where your rifle is shooting that load.