Wow..haven`t had that kind of trouble for many years..old lupie`s and Weavers. Many new scopes of different brands now on my rifles..usually bore sight at 25, fire a shot, move the reticule to the hole, fire another shot to conferm. Shoot at 100 and repeat.
A mistake IMO, I see every year at Sight In, is guys chasing the bullet hole with out calling their shot. How do you make an accurate scope adjustment if you can`t call an accurate shot?