I did not even try to use my 12 ga. on him. He's exaggerating. The recoil bothers me too much any more. The momentary pleasures of a good dusting of the seat of the pants isn't worth the neck and headaches of the next few days.
Besides the only rock salt I had handy was the 50 pound cattle lick block sitting outside my front door. ( Hmmm... hadn't though of using it for cutting out salt slugs before, but may go by the hardware store tomorrow and check the core drills. Interesting possibilty. There are some people - ( not Bill the Cat ) - obnoxious enough to take the shots and to blazes with the headaches.
That's why I sold the 458 mag Remington Safari Grade elephant gun, though it killed jackrabbits like 45 acp ball, ( hardly any bloodshot meat ) it just did it way further out there.