I have had better success with BlackHills ammo in my 308's than any other , BUT , they were chambered with a reamer cut specificaly for their 175gr SMK load. All their loads shoot well in my guns , I have had a couple guns that Federal Match would shoot better but that was a box to box thing , one box of the 168 would shoot great the next woulden't shoot as well , I haven't had nearly these torubles with the BlackHills ammo.
As it was mentioned their supply of both 223 and 308 is going to the sand box rightnow and its drying up here in the states.
Several of my best friends-brothers are working security on Iraq rightnow and they are using alot of Blackhills ammo , knowing that a shortage here means quality ammo for our guys over their I don't mind the inconvience.