Ok, maybe I should describe this thing a little better. Its a friends gun, originally had a 7" barrel and been cut to 3" (dont worry, not prohib, its an antique.) Anyways, there's really no value in it. The bore is rusted to hell, so he wants to re-line and lengthen it. My thought was yo get a 7" barrel, put it on the lathe and turn down 3" on one end so I can use it to re-line and lengthen in one shot.
The gun is chambered in 442 or 44 webley or something (which chambers a shortened 41 mag case) so 38-40, 41lc, 41 mag barrel...doesnt really matter...he's just going to adjust his bullet size to fit the bore. (although it would have to be quite the crimp putting a 38-40 bullet in a 41 mag case)
Oh, and on re-barrelling...the original barrel has an extended portion on the underside...kinda like the S&W frontier DA's so I cant cut the thing off and re-barrel the full length.