Me and a friend of mine just acquired a Ruger Black Hawk in .357 with an additional 9mm cylinder. We want to have the 9mm cylinder converted into a Bain & Davis. I however have a few concerns. And haven't been able to find anything on the internet.
1. I know there are different versions of the B&D and that the 1st generation had a sharper shoulder angle than the current one. How can I be certain that the dies I get, corresponds to the dimensions of my reamed chambers? Or do all available dies have the same specifications?
2. What is the shoulder angle on the current (best) B&D? I've heard 10 degrees, but I am not sure.
3. Where do I get the chamber reamer I need?
Any help will be greatly appreciated.