Yes, it is Charlie, that's the reason I didn't say "P" proof mark. Kinda hard to duplicate the Winchester proof mark with a keyboard . . .
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Here's another recent sale by the same fellow, be careful when dealing with him!
http://www.gunbroker.com/Auction/Vie...Item=141616899
:rofl:
CMP Discussion Forum - Now I've seen everything..........
HTH
Jim, kind of like a test jig! Modern barrels are tested that way.