I have been a competition shooter for many yrs., never lapped a scope ring. Think about it, your making it larger than it was intended to be. A well know gunsmith who has written numerous books on gunsmithing and been published in many shooting magazines had an article out last year saying the same thing. I do put a strip of masking tape on the bottem half of both rings to prevent the scope form ever slipping from recoil. Everyone with something to make and sell has reasons they give for why you need their gadget. One of the things every benchrest shooter learns is after the first 5 yrs you have accumulated gadgets you don't need and will never use again. Lapping rings has nothing to do with alignment to the center of the bore, think about it.
Last edited by jeffppc; 02-23-2018 at 12:07 AM.