This is only and can only be true if all of the components are perfectly machined but have somehow been assembled improperly to promote misalignment. More often than not, in my experience, this is NOT the case.
For example, on this R700 with Leupold 1 piece base, no amount of loosening and retightening would have self-aligned rings mounted in this base - the front end screws were snug, and there was a visible gap between the base and receiver. Snugging those down together would have bent the base and caused misalignment of the rings - misalignment for which lapping might have helped, but would not have been the appropriate independent solution.
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