I watched a program on the Military Channel last night & they featured the Chey-Tac Snipeing System that is being developed by the military...Pretty impressive...Little computer about the size of a hand calculator, for selecting bullet type & weight & inputing weather (Wind) & atmospheric conditions. Along with a infra-red device that attaches directly to the scope for night vision capability out to 800 yds. with no signature. I think the furthest they shot was like 2150 yds. on a steel plate. If you have cable or satellite check it out...pretty cool.