I was at a bear camp in CA this past fall (2023) and two hunters had lever guns. One was a Marlin 336 in 35Rem and the other was a new Marlin 1895 in 45/70. Both hunters harvested black bears with full pass through and from what they said the bears didn't go more than 20 yards before piling up. I could put my fist through the exit wound on the bear shot with the 45/70.
Personal note, my old Pap used a Win94 in 3030 to take the only black bear he ever shot. I own 3030's and a 35Rem and love both. Wouldn't hesitate to take either on a bear hunt so long as the shots were within 100 yards. If you're thinking the distances will be greater than that you might want to look at a different round.