FINALLY !
The barrel was demilled about 18" from the breech end, giving me a lot of stock to work with.
the scale will be .603:1, based on the largest diameter of the barrel we had to work with. I dimensioned a real Whitworth at Gettysburg about two years ago, and refined the prints that are floating around out there.
Any advice?
I especially like the shot of the Bofors Barrel coming out of the spindle of the lathe.....it made people look twice!