I agree also, that of all the variants of bigger calibers for the AR-15 platform, the 6.8 is probably the best hunting cartridge. I base this opinion on the fact that pretty much all of the ammo makers have embraced it & make bullets specific to the 6.8's velocities & performance. Remember, the original design criteria was to develop a military round with a heavier bullet for more knockdown yet fit in the existing AR-15 package with minimal changes.
I'm a big .270 Win fan, but this Lil'.270 has me building one on a Ruger #3 for deer hunting.
You can tell a lot about a woman's mood just by her hands. If they are holding a gun, she's probably very unhappy.
My Texas blog: http://thedrchronicles.com/