Hunting coyotes with 30/06?? What's hard to believe about that? Tell me all the animals that haven't been hunted successfully by the 30/06? I've shot several coyotes with /06...some at considerable range. Loaded with some of the lighter bullets, the /06 is both fast and flat...favored requirements of a coyote rifle. And Lord knows the /06 is deadly when it arrives. This is something the lighter and more traditional varmint rifles can't always boast.
You can use whatever you want on a Coyote but I will take the light recoiling flat shooting cartridge anytime.. A lot of 30-06's do not like anything lighter then a 150 and I found that out to be fact even though loading manuals are filled with info about them but the twist rate on most 30-06 barrels calls for a 150 grain or more bullet for best accuracy. Heck if I want a flat shooting 30 for coyotes I'll use my 300 mags.