If so, prime powder and wad a couple of cases. Then take a couple of cotton balls stuff them in, then add water. Weigh the water so that it is not over 1 1/4 or 1 1/2 oz depending on what you usual load. They wont go far, but in there range they are very discourageing to critters. And unless your neighbors are petting them, you wont hurt them either.
Notem, I have seen this but never have done it myself. my home loads usualy involve more lethal measures, like taking .50 roundballs from a muzzleloader and beat them with a hammer until they are about the diameter of a 12 ga. Then load them. They also dont fly as far as real bullets, but they are erratic, and not recomemded to sane people.