No doubt that it is legal to kill coyotes in CA., BUT not just any where and every where. If you live in a residential area/suburb, then it's probably not legal to discharge a firearm. Here's an idea. IF in fact you live in an area where it's illigal to hunt/discharge a firearm, instead of breaking the law, why not try to contact your local game department and put pressure on them to remove the problem coyotes. There are professional ADC/animal damage control people that will be much more effective at removing problom animals in a certain area, than you will be will a brick of .22lr ammo.