Boresighting is a method of visually pre-aligning a firearm barrel's bore axis with the target, in order to more easily zero the gunsight. The process is usually performed on a rifle, and can be accomplished either with the naked eye, or with a specialized device called a boresighter.

How does a bore Sighter work?

Bore sighting is a method of aligning a firearm's sighting system with the barrel. ... The laser bore sight fits into the chamber of the firearm. Once the laser is turned on, the firearm is aimed at the target and the scope or sights are aligned to aim at the laser dot on the target.

Is a bore Sighter worth it?

There are many advantages to bore sighting- using a laser. First, they are a far more precise method than using your eye. While visually bore sighting a firearm may get you on paper at 100 yards, laser bore sighting will put you much closer to center and will require less ammo in the long run when zeroing the rifle.