i have hunted coyotes for years, killed alot of them, if you are just riding around 223 is ok, i have shot them with 223 out to 100 yds pls, some drop down, some run, i dont go looking for them we have so many here, my best coyote rifle is a handi in 30-06 with bushnell banner 3X9X40, this old rifle has killed many a deer and coyote, i just leave them where they drop, TIP if you can hunt land by a railroad or close to a railroad when the train blows the horn the yotes will go wild howling, killed many after the train passed thur.