As long as the surface hardening of a lifter base isn't compromised I don't see a problem with re-radiusing a used lifter. When I lap the mating faces of the bolt and receiver with diamond lapping compound on a Mauser rifle for full contact while building a custom rifle, I can take a maximum of about .005" off both faces before I get into soft metal.

Now you've got me thinking- - - -by using a collet chuck and a fixture to hold the lifter, I'll bet I could fabricate a radius-grinding fixture that would use most of the length of the 48" ways on my lathe and a tool post grinder to recut the radius on lifters. Another project in the works!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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