moephiues,
50% greater range. 125 yards for the regular head, 175 yards for the turbohead. These are max-range figures, both eyes open. Cut them in half if you close one eye when you shoot. Although I have them all, this is the only high-power Surefire that I USE because of it's extreme versatility. MN10, MN11, MN15, MN16, M3T+A-19 & the MN60 OR MN61, M3T+A-19 & the N62, KL2, KL6.
Hope this helps.