So you pro ring lappers, let me ask you a question:
Did you have sub moa rifles before you started lapping them? Did you ever have a rifle shoot poorly, and then lapping the rings fixed it? (I know I'm inviting a dishonest person an open doorway to lie, but hopefully everyone here is pretty honest).
Have you ever taken a .75 moa rifle, taken it off the rings and lapped them, and found an improvement?
If none of those things happened, there is no evidence for this process. I'd bet that 99% of Uber accurate rifles out there have never seen a lappnteresting question - have you tried it?