I have made a lot of different scope mounts and modified a lot of them.
I need to use a bore sighter.
I like the magnetic Leupold zero point, and have a couple of them.
I have come up with an elaborate process of replacing the LED with a big green one and replacing the batteries with big AA ones.
It will always be on the paper, but with a wimpy recoiling gun like a .223 or 25/20 is will be bore sighted and then print within 2 moa.
With a light weight rifle in a belted magnum cartridge, it takes more sighting in.
Here is a 10 second video of a Leupold Bore sight I have converted from amber to green. I have a rack and pinion microscope focus system to center the camera.