ORIGINAL: Roskoe
For coyotes, I would have a slight preferrence to a fast 6MM over a .257 caliber. And would probably slightly prefer a fast .22 CFover a fast 6MM - although for deer my preference scale would slide the other way. A fast 6MM would be great for both, if that is what you are asking.
i agree, those fast yotes seem to always dodge my .25-06 bullet. that extra 100-300 f.p.s. in the 6mm seems to make all the difference...