Re: Meplat Uniform or Mearsure bearing surface first.
I think you might have had 1 too many barley pop's, bullet bearing surface is unrelated to meplat uniforming.
If you have a bullet bearing surface comparator measure all of your bullets first segregating them into lots,then you can measure from the rear bearing surface to the meplat and uniform if needed. measuring and segregating into different lots is the way to go if you can ,meplat uniforming does work but will degrade B.C. more than you think.
It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.