well maybe mine is bent. if i turn it while in the bore the red dot shifts around. i have been having a time getting my rifle sighted in, and i changed rings and bases which helped somewhat, now wondering about the laser. never had this much trouble with a rifle scope before.
I will say, that while they do get us on paper, and we've been using them for years. Were always care full, not to scratch, or mar the bore by muscle fugging things up! Even though they fit, in kinds loosely with a spring like wire adjuster to help align it in the bore, be careful not to get over aggressive with it, and try to feel the alignment within the Bore Sighter!