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Old May 17, 2011, 04:05 PM   #6
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Join Date: August 25, 2008
Location: 1B ID
Posts: 10,197
Chuck up a brass round-head screw in your hand drill. Apply an abrasive paste and work on that bore. Cost? Pennies.
Tip courtesy of Brownell's Gunsmith Kinks books.
My grandfather recrowned a Type 99 Arisaka with that method (except he had solid brass balls that he chucked directly in his drill press).

It worked amazingly well. ...and they're self-centering. (so long as your screw has no run-out, and/or the ball is actually round)
"Such is the strange way that man works -- first he virtually destroys a species and then does everything in his power to restore it."
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