If you are looking for barrel convergence, then the longer the distance between sight and aperture, the smalller the measuring error.
Drill a hole through the center of a cork and stick it in the muzzle as close to center as possible.
Insert the laser in the breech.
turn the laser emitter in the chamber until the light comes out the hole.
Hold the barrels, level and steady in a jig, and at a distance of 16 yards mark the point of impact on a sheet of cardboard
Do the same thing for the other barrel and you will identify whether or not the barrels converge.
You will have to measure the muzzle centers and compare that to the distance between your laser impacts.
A little math and you have point of convergence.
Definitely close enough for shotgunning.
I think I have about three dollars into the two corks, and laser pointer that I use for training.
It’s for dry firing exercises, and Mount practice.
Last edited by ClapperZapper; 05/02/23 03:38 PM.
