Does anyone have a source listing the ethical foot pounds suggested to kill a coyote. I don't want stories or coyotes shot with air guns or .22 lr, etc. Looking for a "source" of what is considered responsible. I lost two with my .17 Fireball this year and think I need to upgrade to a .223. Estimate I hit them with around 350 foot pounds. Thanks! PM's welcomed too. Should mention these are the larger Eastern coyotes. Average weight of 40 pounds.