“I have the FN 5.7 which holds 20 rounds and comes with 3 clips. Unload the clip on the bear but don’t stick around to see what damage you did.”
Don’t stick around? You won’t be around long.
A la Cooper on mouse guns: “if carrying it comforts you, do so, but do not load it, for if you load it you may fire it and hit someone and give them reason to do you great harm.”
I've always found those that have a problem with it don't actually own it. They typically can't afford it.
In theory, a large North American animal engaged with a single round from a 5n7 is like you or I being attacked by a hornet. One hornet won't deter us but a nest of them coming at us will.
If a large animal is charging, the usefulness of a 5n7 is to place many hits into the animal and thereby distract it enough that it doesn't fully carry through with it's charge. Each slug striking it is like the blow from a machinists ball peen hammer. Once the animal diverts it's charge, the 5n7 enables you to continue sending a swarm of "hornets" into it and cause it to run away. Volume of fire on target is the key in such case.