hello everyone, from north florida and i've always wanted an AR, and when the 6.8mm came out it was perfect for what i wanted in a round, all around shooting and hope to deer hunt with it. I've searched the net with no success for a problem with my rounds not firing and having a small dimple in the primer, came here and found a possible solution , firing pin, hope that's it. Just got to shoot some long distance and i have a cheap halo graphic sight and hit a metal 12"x8" chicken at 230 yards,3 out of 4 shots, i was impressed not only with the accuracy, but myself also.