I lap all my rings whether Waren, Burris Tacticals, & Leupold. These are all I use for my weapons. I want 100% contact with scope tube & ring surface. Most wont because they dont know how, or their dont want to put the time into it. Your weakest link in a shooting system is your scope mount, rings & rings to scope. IMO ideal mounting system secures your optics to your firearm as low as comfortably possible, with the fewest parts necessary, more parts equals more chances for something to go wrong. IMO solid steel mounts, rings are the strongest less likely to go wrong. Another is I like going (doing myself)is larger on my base screws than the common 6-48 scope base mounting screws. I believe more "meat" holding your mounts are added asurance of no problems so I like going to drill & re-tap .146"-48. Like I mention your weakest link on your shooting system is your mounts, rings & rings to scope.