Taken from http://www.army-technology.com/contractors/ammunition/apfsds.htm
LONG RANGE TANK GUNNERY
"During the Gulf War the open desert terrain and extensive use of thermal imaging weapon sights ensured that maximum engagement ranges were possible. Tank gunnery demonstrably reached a new zenith. Modern integrated fire control computers are highly sophisticated and able to link the electro-optical systems/sensors to a gyroscopic stabilised main gun. Laser range finders deliver pin point range calculations whilst other ballistic properties such as windage, barrel wear, air and barrel temperature are also calculated. The fire control systems therefore achieve 'first round' hit probability on a regular basis
Hyper-velocity APFSDS rounds have significantly increased the lethal range of tank armament, and combined with improvements in tank gunnery this has meant that combat engagement ranges have been dramatically increased. During Operation Granby (Desert Storm to the Americans) a British Army Challenger tank achieved the longest range confirmed tank-to-tank kill at 5100 meters or 5.1km with an rifled 120mm APFSDS 'Charm' depleted uranium round"
Jeez, thats 3 miles in old money!!
LONG RANGE TANK GUNNERY
"During the Gulf War the open desert terrain and extensive use of thermal imaging weapon sights ensured that maximum engagement ranges were possible. Tank gunnery demonstrably reached a new zenith. Modern integrated fire control computers are highly sophisticated and able to link the electro-optical systems/sensors to a gyroscopic stabilised main gun. Laser range finders deliver pin point range calculations whilst other ballistic properties such as windage, barrel wear, air and barrel temperature are also calculated. The fire control systems therefore achieve 'first round' hit probability on a regular basis
Hyper-velocity APFSDS rounds have significantly increased the lethal range of tank armament, and combined with improvements in tank gunnery this has meant that combat engagement ranges have been dramatically increased. During Operation Granby (Desert Storm to the Americans) a British Army Challenger tank achieved the longest range confirmed tank-to-tank kill at 5100 meters or 5.1km with an rifled 120mm APFSDS 'Charm' depleted uranium round"
Jeez, thats 3 miles in old money!!