Since your using them in an AR-15, I would advise you to uniform your cases after the first firing. It's much easier to get uniform seating of the primers. High primers can be a big problem with an AR-15. The wide variety of military cases used for the AR-15 can give you some more problems if they are not uniformed. I'm not saying you could not get away without uniforming (including primer pockets and flashholes), but that's your call. I do it, but I'm one of those guys that likes to pick the fly crap out of the pepper. I believe that if you don't want to make as good or better ammo than what's on the shelf, why reload?