I did finally find the drawing. It is from Flannery Bolt Co., Bridgeville, PA. To sum the title block, it appears to be a drawing for a 12 gauge Ithaca gun barrel, 1940. No mention for what model. There is a barrel forging drawing number referenced. I do know Flannery made barrels for the .45 production and these are marked with a F. This excursion sheds no light on the questions at hand, sorry for the red herring.

Last edited by Walter C. Snyder; 07/02/09 01:10 PM.
Walter c. Snyder