I can't believe that it would even occur to anyone to use a BBgun to kill a respectable animal such as the Coyote. I wouldn't even say that a .22 long rifle would be a relible means of dispatching the animal, unless, like PK said, you had one in a trap at point blank range. It is not my place to tell you how to hunt the game that you pursue, but I can say that as a hunter, it is your responsibility to make every effort to BE ETHICAL AND HUMANE. A BB gun just won't do it.