Because of the slow moving bullet(round ball) there was very minimal to no-existent hydrostatic shock. The bullet would produce a small wound channel and if it exited, the exit hole would likely be similar to the entrance hole.
A shot that didn’t hit a bone wouldn’t slow down an attacker. Of course this would also depend on the amount of Adrenalin pumping through the veins.
Health care was as crude as the guns, and nearly every wound would be life threatening.