Most useful diy bore sightings tool i’ve used - Wheeler Professional Laser Bore Sighter

The Wheeler professional laser bore sighter is the easiest and most useful bore sighter that I’ve ever used. It easily attaches to the end of the rifle barrel, then I center the tool by eyeballing the OD of barrel to the OD of the tool. I bore sight against a white barn @ 70-100 yards distant with the green laser in lower light conditions that really makes the green dot stand out. I then simply immobilize the rifle and match the crosshairs to the green dot. I’ve had amazing luck with this system so far and I’m would imagine the red dot would work as well in low light conditions with the included reflective target