I did a 20" ar15 build in 6.5 grendel running Sierra 85g bullets for coyote and it smacks em down nicely.
My deer load is 120g, drops goats, mulies, whitetail right down.
Furthest on a goat was 385 yds, 1 shot kill, all deer 1 shot kills from 85yds to 275yd so far.
I got a deal on a Ruger predator American bolt gun, ar15 mag, a bit more accurate than the ar15. Last coyote with it at a tad over 400yds with the 85g jsp, flat out dropped on the spot.
So yea the 6.5 Grendel over the 6.8.
