Whenever i get settled here in OK....i want to add a .243 to the collection...like that round allot, or a .25-06 another good one...both work wonders on coyotes and even deer/antelope...my final antelope season in SD i shot my 17" buck with a .25-06 out of a Ruger 1, i wasnt having any luck with my .30-06 that day..so i borrowed my friends .25-06. As for shooting the coyotes with .223/5.56...i lost a few of them in SD out in the grasslands using my M-788 Rem .223. .243 of another friends worked great on coyotes. Never have used an AR style weapon for any hunting yet...suppose the 300 AAC would whack a yote good...pig too.