Well, the twist in a Marlin 1894 .44 is just a hair over half as fast as the twist in a Ruger Super Blackhawk. That might pattern a bit tighter.
I think the snake loads use 9 shot. If you load your own with 7.5, it will work better on small game, if the pattern stays tight enough. 6 shot is devastating on cottontails, but you'd have to make sure you can fit enough pellets. You could also try buffered loads -- normally used for bigger shot in 12 Gauges, but same principle might work for 6's in a .44.
Don't know about the twist in Winchesters, Pumas, or whatever else might be floating around out there.
Note that the recent .410 Winchester and Marlin lever actions didn't last long in the marketplace. Maybe people didn't want yet another oddball gun, or maybe they didn't work so well. But in your case, you could try it yourself without spending more than $10.