Marlin 1894
I had one of these guns, back in the mid 80s. great little gun. With .38s it just went "pow", no recoil to speak of. If I remember right, it would hold 10 .38s, or 9 .357s. RN feeds better than SWC. Mine worked pretty well, my father-in-law fell in love with it, so I gave it to him for Christmas.
A friend of mine liked mine so well, he went and got one. Now, he did wind up with one jam (with .38s) that was so bad we had to take the gun apart to fix, but he was the kind of guy who could jam a single shot....
they are good little guns, and better for camping/travel that a handgun (because of legal restrictions). Short and handy, accurate at reasonable ranges. Just remember it is NOT a rifle, although it looks like one.
Look around for a used one, it won't be as cheap as a used .30-30, it is more of a specialty piece, but it still should be cheaper than one of the "cowboy" guns. I think they want too much for them.