RE: Sighting in.....
A laser bore sighter caneliminate a lot of shooting and frustration. Mine gets a lot of use sighting in the guns of friends and the folks who i meet at the range. There is a 1" target on a wall 25 feet from the aiming point in our house. By laser boresighting it is often possible to eliminate the 25 yard zero. My laser boresighter has been used so muchthat the batteries were replaced twice.