Given the opportunity, and good presentation, and at a reasonable range, I wouldn't hesitate to shoot a black bear with my 1894. My load would be the NEI 240 gr SWC-GC (weighs in at 262 grains - sized, lubed, and checked), cast from wheel weights and heat treated to a BHN of 22, loaded over 23.5 grains of W-296 and a WLP Primer. This is my "go to" load for deer in the .44 Mag and produces 1,740 fps at the muzzle and will print three shots into a 2" group at 100 yards from my rifle. From a handgun, I haven't chrono'd these loads, but can honestly say they are not comfortable, nor for casual plinking.
On a blackie, penetration with this load shouldn't be an issue, even if you want to take out a couple of shoulders. And for the record, these cast bullets are up to any job a jacketed bullet can do.