Just as an aside, while it isn't likely to be quite as long-term sturdy for hot loads as the Marlins and later design Winchesters, the feed system of the Uberti 1873 Winchester clones is basically a ride up in an elevator followed by a straight shove into the chamber without the nose up / tip down process of the later designs. As long as you've got SOME taper, there's little stopping a successful chambering.
Downside is you're pretty much an irons-only affair.
There is also the Ruger 77/357, if bolt guns are more your thing.