I don't have any experience with one, but I'm going to approach this conversation strictly from the Enabler's point of view.

Nice looking rifle, great cartridge that has much potential in the Browning platform, you can go 50 Kpsi with the attendant performance.....and recoil.

Just gather you some brass.

And, what I've seen out of the .45-70, you don't need 50 Kpsi loads to do what a .45-70 is supposed to do.

That cartridge is a marvelous conversion for a short-mag bolt rifle.