Originally Posted by sharpshooter
Most people will mis interperate the wear pattern on the lugs and lug abutments. When the lugs first touch the lug abutments, it will contact at the very outside of the ramp(as the ramps are cut at the factory) because of the manner of which there are machined. This will leave a contact mark to the outside of the lug as at this point the pressure is created by the compressing of the firing pin spring, aproxx 20 lbs or so. The ramp is not a perfect mate to the leading edge of the bolt lug, which is .220" ahead of the centerline. Once the innermost part of the leading edge of the lug is rotated past the inner most edge of the ramp, the load is now distributed more evenly, but may not be exactly centered.
What you are seeing and interpreting is rotational contact, not actually thrust contact.
Lug lapping is a old time method used to insure good lug contact to actions that have a fixed bolt head, such as a Rem 700. One of the problems with a fixed bolt head is that the trigger set up puts upward pressure on the rear of the bolt, tilting the lugs out of square. This is not an issue with a Savage, as the cocking piece engages on the side.
If you are worried about things being out of square when you chamber a round, consider this: The ejector will push a case to one side. At one time bench resters thought this was a detriment to accuracy, now almost everyone uses one.
Save your time and money and make better ammo.