I don't have a specific load for you, but I'd imagine the slowest safe powder, in a healthy dose, with a good magnum primer would be a good fit.
There's conflicting info on what brands, if any, load magnum primers hotter or if the only discernible difference is the cup thickness. I, for one, think that the Federal and Winchester magnum primers are a bit hotter (it might be in my head, but they haven't let me down yet)
It will shoot any published load. It might NOT shoot every bullet. Stay away from semiwadcutters and everything else should cycle well. We use my cast 125 grain RNFP and Hornady XTP's in all our lever guns.
357 has the right of it...if you're going to hunt with that rifle, go with one of the heavier bullet options and stoke it with 2400, H110/W296 or the VV n110. Definitely use a magnum primer to ensure the powder burns uniformly, even in cold temps.
If you're just going to plink with it, buy yourself a bunch of 158gr cast boolits and use any middling charge of a suitable pistol powder, like Unique. Folks get too hung up on loading for a pistol cartridge for a carbine or rifle...it's still the same cartridge, either way.