Very easy to use - Wheeler Professional Laser Bore Sighter

This bore sighter is very easy to use, stick it on the end of the barrel. put the gun in a rest of some sort and dial the scope in to the dot on the relective target. One shot on a paper target or paper plate, put the laser back on and put the dot on the center and line the crosshairs up on the bullet hole and you're done. East as pie.