Hey Don.....

[Nuclearcricket]

Sam, What is a 3.5 contour? Dimensions??

Kurt, the barrel comes with a round shank about 1.240 in diameter, and a little over 1.5" long, to the beginning of the flat.It then tapers from 1.120" to .950 at the muzzle and it 35" long.
It will be put on a Pedrosoli Rolling block receiver and I wanted to go as heavy as I could but not go over the 12.2 pound limit. It is a little lighter than the Shiloh #1 heavy barrel. I think but an not positive that the #1 heavy and a Winchester #4 barrel are pretty close to the same.
The inside is .438X.446, and for being a brand new barrel it is one of the smoothest I have ever pushed a tight patch through. No tight or loose feelings and no round spots.
The exterior finish was not quite what I had hoped but 2 weeks of part time work and it is polished almost up to 400 grit finish.
I did do a little research on a holding fixture to allow the barrel to rock while I draw filed it and ended up making my own. I probably have about $10 or so invested in some oak, screws and some Delrin centers to support the barrel. I am happy with it and it seemed to work well.
Hope this helps you out.
Sam