44-60 bottle neck

[Nuclearcricket]

I would think that any of the .50 cases would work, I don't know how short the 50-70 is but the 44-60 case is only 1 7/8". Yea it makes sense that Winchester would beef up the case for the extra horse power. I used Swiss 1 1/2 powder to test the capacity and I think to the base of the neck was about 43 or so grains, probably gain a couple once its blown out.
Yea the hepburn actions are a bit more work than advertised. I got the one that is drilled and taped but still the trigger housing/lower tang has to have about .060" taken off to even fit into the action. Hammer and trigger both need a lot of metal removed. Nothing I can't do but I am kind of Anal about how things fit. The one part that concerns me a bit is the block lever, that has to be fitted to 2 holes and the actuator block. I have seen one that had been built and assembled. it just needed a trigger job and the firing pin hole drilled. For the most part it turned out nice and I will have to try to remember to check with the owner next month to see how well its working. So many projects, so little time.
Sam