Certainly not my cup of tea, but I believe I remember seeing 760 carbines, 18 1/2 barrel, in 358 win, back in the late 60's in a couple of Western Auto stores here in Mo, about '67 I think. They were pretty nice brush guns I thought at the time, and a 358 is an excellent choice for such a weapon. I am a fan of the big Marlins, I admit. Never had a 45/70 in one, but did 444.
If I were going to have a "Dream rifle" I think it would have to be a Winchester low wall copy, Medium 20" hexagon barrel , in 256 Win. I know that is a bit odd, but I can see that with nice wood, and because of my eyes I would need a scope, so a compact fixed power Leupold, a 6X I would say. That would take care of just about everything but deer season where I have way too many already. I have enough straight linotype left to cast more of those little 65gr's than I could ever shoot, or use 75 gr V-max.