Critter, you should not be going that deep at all using any of the above methods. When I did mine the crown just looked bad, no major angle problems, just a bunch of chatter marks. I could not measure the amount of material removed but it was pretty small.

Hunt hard, kill clean, waste nothing and offer no apologies.

"In rifle work, group size is of some interest...but it is well to remember that a rifleman does not shoot groups, he shoots shots." Jeff Cooper