Lessons learned:
1. At 20 yards, you might scare a dog or some other animal, but you sure wouldn't break the skin.
2. At 10 yards, you might break the skin with a couple of grains, but nothing very serious.
3. At 12 feet, you might get the desired effect, if the desired effect is to "burn" the target with the rock salt.
4. At 4 feet, you might cause a wound requiring a visit to a hospital for a human, or maybe death to a small animal.
5. Movie plots that show someone "burning" a bad guy at across-the-yard distances are hogwash.
6. Rock salt makes a pitiful personal defense load, as if we didn't already know that.
Got home and broke out the Tampax and soapy water, and got to work cleaning the barrel of the shotgun. I'm not going to take the chance of leaving salt deposits in the barrel.
I then ran very hot water through the barrel and dried it completely. Then cleaned and oiled it as normal.
I then returned the plated 00 Buckshot to the magazine. If I ever have to "burn" a bad guy, he's not going to have any doubts or complaints about lack of penetration.
Shooting stuff is fun, even if it is something as silly as rock salt loads in a shotgun.smilie