Are you saying the pistol did not fire in DA 3 times, but most of the time it fired in SA? Did the hammer fall, but the pistol failed to fire while the safety/decocker was in the upright position? Were you getting primer strikes on those rounds that failed to fire? Did you break it down, clean and lube the pistol before taking it to the range? It's definately not a break in thing. I would call Beretta, or seek advice from a competent gunsmith.