well, let me slant this from the perspective of someone that has actually killed coyotes with a .308.
I have killed out to 250 yards with my Remington 700. With proper bullets, the .308 will kill them cleanly as far as you can see them. Remember, this is the same round that snipers shoot folks with at 1000 yards.
I have been handloading the Hornady 130 grain spire point over IMR4895, and getting exellent accuracy.
In my experience, the exit wounds are baseball size, and the animal usually leaps up, and flops down.
Nemo Me Impune Lacesset
"The trouble with our liberal friends is not that they're ignorant; it's just that they know so much that isn't so.".........Ronald Reagan