All the ammo labeled for varmints will put them in the dust. An fmj will certainly pass through the little fellows.
With varmint bullets pick any two of the four legs and shoot somewhere between them. Soft points for deer and stuff will kill them, but most likely they will suffer. Art, he can show you a picture of a ruined coyote with a larger caliber lol.
Navin R. Johnson: "He hates these cans!!!! Stay away from the cans!!!!"