Bought a Bushnell boresighter, and had it in a .22 barrel in the vise in my shop. Just for kicks, I decided to check it by rotating the laser in the bore, and watching the dot 30 ft away on the wall. Holy crap! The dot was going around in a 4" circle! Double checked the fit in the barrel, crown, etc. Still makes a circle. So I decided to call Bushnell Tech support, and see if the 4 allen screws will recenter the laser. "Oh that's the way it's supposed to be. You rotate the laser to the lowest point, and adjust your scope, so now you have an elevation for 100 yards." WTF?? I reread the directions that came with it, and noooo, the dot is supposed to point at the bore center, and you have to account for the scope height, etc, to get on target. Has anybody screwed with these allen screws, to adjust the laser on these? I'm thinking I'm just going to send the thing back to Bushnell, and pay the damn $10 shipping. Tech support by retired politician, maybe??