Send your rifle to Turnbull with a 20 twist octagon barrel from McGowen, cut to your preferred length on barrel and mag tube, with the 50-110 WCF and Starline brass you can load Cast Performance 475 to 525gr bullets over RL-15 powder, I took the 525's with RL-15 to a safe and accurate 2150 fps, a horrendously powerful load, order a Smith Ladder Barrel Sight from Buffalo Arms, with that, you can drill 400 yard steel gongs.
I do that very thing with my Turnbull '86 in 50-110 WCF, even with blackpowder and 700 grain cast lead bullets, it's a hell of a cartridge.
