Great point Randy.
Wait a minute...... lets mark this on the wall.... your agreeing with me about the 17?
My main objective when shooting an animal is first and formost a quick, humain kill. Splash wounds on coyotes shoulders often lead to a wounded but very much alive coyotes. Sure the fur may still be good (However I've seen some nasty spalash wounds) but the coyote is still, very much alive, in pain, and sometimes difficult to recover. Shot with a bigger gun the odds swing more in favor of acheiving a quik, humain kill. Sure they will wound some too but the odds are drastically reduced when bullet weight/energy is increased. High vlocity 22's can be tough on fur for sure, and the 17 will definately kill a coyote, but I honestly believe down to my bones that the 17 is marginal at best. With this said you have to ask yourself, do I want a caliber that has more "potential" to splach or do I want a caliber that has more "potential" to create an exit. In my mind the answer is clear. I want a bullet that has less potentilal to splash thus ensuring I get to the goody regarless of bone. This makes for a very dead coyote. Why with all the choices available would you want to place limits on yourself when obvious (at least in my experience) better choices exist. The 223 is not perfect but nothing really is. There is nothing fancy about this tired old caliber and people don't go WOW when you drag it out but it is a workhorse. The 223 has lots better choices in bullets suitable for shooting the larger predators than the sub-calibers ever will. Their are some better bullets available to the handloader for the sub caliber guns but they are still on the light side IMHO. I'm not married to the 223 either. If I hunted where shots over 200 were common I would shoot a 250, swift or maybe a 243. As Randy stated the 243 is not to tough on fur with the tougher bullets. A good friend of mine uses a 243 exclusively with 100 core locts, he doesn't save the fur but most he shoots only have minimal damage.
I'm not against guys using 17's or the new 20's. If that's what floats their boat, then more power to them, but to say they are just as effective is just failing to face reality. No flames intended just simple physics. The old 7 mag out does them both. Why? because it's bigger. No different than the reasoning why the 223 out performs the 17. There are tradoffs in what you are willing to tolerate in recoil, killing potential, and fur damage. The 22's just fit in where I'm willing to accept the tradeoffs.
Good Hunting
Byron