243win brings a lot of extra heat which can mean big messes on coyotes - AND the slow standard twist for 243win factory rifles means they’re limited to lighter and/or less efficient bullet designs when it comes to knocking down deer - certainly the 243win will kill anything on this list, but it’s less effective at both ends of the spectrum than are some other alternatives. A 6 ARC, 6.5 Grendel, or the new 22 ARC, or rounds like the 6 BR, Dasher, or 6 GT are about perfect for the described spectrum of animals - less powder than 243win which mitigates some pelt damage on the small side, but access to faster twists for heavier bullets and more efficient BC’s so they retain impact velocity farther downrange to better anchor deer.