Greetings, Herbert, Blair, et al!
Although I currently do not have the funds, I've been thinking a bit about a modern "56-46 CF" that
would be as true to the original cartridge design as possible, and yet be practical, and easy to create.
I just happen to have a 56-46RF in front of me; the neck diameter is +/- .475", the same as many ".45"
cartridges (.45Colt). I envision doing away with the Outside Lubricated Bullet, elongating the cartridge
neck, and seating a 300 / 350 grain Bullet, mated to a barrel with a +/- .450"bore / .458"groove. This
should allow the use of readily obtainable dies ( C&H ), the difference being the use of the smaller diameter
bullet ( Ideal # 457191? ). I think that this would be a nearly authentic BN cartridge, and, in my mind, a
viable Deer cartridge. I believe that a 1 / 22" twist would work well.
Just my thoughts.
Be Well!
M.T.Marfield