Ian, the .38-50 I have found to be a very good caliber. Very light in recoil and good accuracy potential.
But I will admit that mine fell asleep since I got this new lot of Swiss that I have not been getting a reliable accuracy under 2 MOA.
I haven't quite figured out what's going on and I went through several changes shooting ladder loads and seen groups 6" plus at 200 yards.
I been working with Gail at CPA for a second .38-50.

I like the 44-1/2 Stevens action.