Lapping blindly is as foolish as neglecting to lap at all. The first step in lapping any rings should be a test of current contact. If the rings are perfectly aligned and have sufficient contact, you'll know within a few seconds of lapping. If they do not, then equally, you'll know.

Talley, Seekins, Larue, Nightforce, and often Warne do not need lapped. But I always check, just the same. Burris signature Zee rings do not need and cannot be lapped. Everyone gets checked, some take a long time to finish, some are sufficient upon the check and take effectively no time at all.