Trapdoor Collector Discussion Board

[ Read Responses | Post a New Response | Return to the Index ]
[ Previous | Previous in Thread | Next in Thread | Next ]

Re: Bore diameter

Posted by Don Harpold on Monday, 13 December 2010, at 4:13 a.m., in response to Bore diameter, posted by Thomas Jacobson on Sunday, 12 December 2010, at 5:22 p.m.

The bore would be .450

The rifling depth is .005

This per Ordnance Memoranda 15, 1873

If you do not have a three jaw micrometer it is difficult to measure with any accuracy.


Post a New Response

Your Name:

E-Mail Address:


Please answer the riddle feature to prevent spam:    12 (plus+) 2 (equals =)


Return to the Trapdoor Collector home page via this link.