Not sure where you are from, but possibly size of the coyote has a lot to do with it as well. They’re are some large coyotes here in Kansas. Sure with the perfect shot 223 will get it done on anything.
I considered going with a 6.5 creed but really wanted to stay as light as possible and didn’t want to jump up to an ar 10 platform if I didn’t have to. I’ve bought 300 rounds of 6.5 G ammo so far for just $1.13 a round so I’m plenty happy with that. 22 creed has best ballistics all around but I didn’t want to pay for them ammo prices. I’m really thinking I’ll love the 6.5 G but if I don’t then I guess that’ll give me an excuse to build another rifle