I have Fieldcrafts in 21" 6.5 CM and 1:9 twist 270. I like them both and would hate to have to choose between them. That said, I tend to grab the 21" 6.5 CM more than any others. I do more deer hunting than elk hunting and just don't need anything bigger. I shot 2 deer with it yesterday in the 300-350 yd range and couldn't be happier.
Where I see the FC shining as a hunting rifle is in the light/handy package. Short action makes sense and mild recoil for shootability should be a priority in that type of rifle.
