Ive also got one (although I converted a hunter model into a long range model sans side charger). I've played with a few different configurations. I wrote up a few reviews/tests on it and happy to post links if your interested.
Factory barrel shot pretty damn well(.75MOA), Aeroprecision barrel shot about same (.75) Dracos 6.5CM barrel shot better (1/2MOA).
On a side note: I really like mine but I don't shoot it enough. Bought it as first AR10 build and simply tuned it and ready to move on. I'm consolidating to focus on bolt guns for competition. If your interested, I'll be putting mine up with all three barrels, two triggers, two grips and few other goodies (feel free to shoot me a PM if interested). If buying new, I think it's a good rifle overall.