If you don't handload, the CM seems to have way more ammo availability. At least in my area. The CM seems really easy to get to shoot really well, at least from my examples. I don't think you would be able to tell the difference on animals.
If you do handload, either can be whatever you load it to be. I would have leaned toward the 7mm-08 based on past experience until I tried a couple Creedmoors.
