Mike and anyone else. Joe Wood sent me the Nov. 1937 American Rifleman article "Making Double Shotgun Barrels" by A.P. Curtis some time ago. He discusses barrel straightening and joining. "Great care here is necessary to see that the tubes lie in the same plane, and are properly adjusted to prevent cross-firing."
I'd be happy to forward the article to anyone if you'll e-mail me at revdoc2@cox.net

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