For coyotes at ranges 75 yards or less, perhaps what you need is a .25 cal PCP air rifle. Many are available with a built in or detachable moderator. While some folks, not me, spend thousands of dollars, you certainly don’t have to spend that much. I am used to Springers, but a moderator is far more effective on a PCP. The beauty of it is that you can avoid the federal tax stamp and wait time.