If your rings have plenty of clamp once you lap to 80%, and you feel the need to go to 100%, go ahead and do it. If you stop at %80 you will be just fine, when lapped to that point you have elliminated what lapping is suposed to correct in the first place. 2 rings that align and put no flex or stress into the scope tube.
Side tip, Lapping bars wear out with use mic them for dimension.
Side tip, Lapping bars wear out with use mic them for dimension.