Hodgdon reloading data center lists a max charge out of a pistol with a 125 gr. bullet doing 1960 fps. at 41,400 CUP. You shoot that out of a carbine, and it's gonna do 2276 fps at 41,400 CUP out of an 18" barrel, though it'll probably do slightly better out of a 16" barrel, which seem to be optimal. This is very slightly less than what a 130 gr. bullet will do out of a .30-30 by about 300 fps..
For the weight savings of carrying .30-30 ammo vs. .357 ammo in a pack or on a belt for an extended period of time, I'd rather carry the .357, as it shows some real advantages. If you're using a model '92 rifle, it's gonna be lighter, kick less, use less powder, use cheaper brass, and have a shorter lever throw.
Once you go up to 158 gr., however, the disparity REALLY grows; somewhere in the neighborhood of 600 fps faster in the .30-30. If you're afraid you'll run into large predators or want to hunt large game, bigger than a deer, or farther than ambush distance, I'd definitely go with the .30-30.