Originally Posted By frankiebagadonuts:
IMO, laser boresighters are useless except for the cartridge specific ones that fit into the chamber. Just boresight it by placing your rifle (bolt gun) or upper (AR) on a rest and looking through the bore. Aim at a bright target (i.e. orange paster), then adjust sights so they are alos lined up on this target. This method has always got me on paper.
That's the method I've used for forty years, but I thought I'd try high-tech. The part that really interested me was the possibility of rechecking zero without having to shoot. That doesn't appear to be possible with this laser. I absolutely believe that I would stay within a few inches at 100 yards, so it's just my uber-perfectionist anal-retentive personality at work.