Al in Mi wrote:call Dave Manson
Stealthshooter-
Yep.
http://www.mansonreamers.comManson ground my 450B reamer and turned my chambering gauges. His reamers are finished like jewelry, and perform very well. He also makes them to correct dimensions; he grinds the reamers that Bushmaster uses in their production work. While Manson can produce a reamer as rapidly as any other maker, it's still a couple months wait as I recall. Call him and ask.
None of the usual reamer rental places had a 450B reamer available a few months ago. That may have changed by now.
Good luck, and let us know how things work out.
--Bob