Armor-piercing ammunition for gun, 90-mm, M3

Washington, D.C.: Office of the chief of ordnance. 1945. – 16 р.Various models of the latest enemy Armored Force Vehicles encountered and captured on the battlefield were shipped to the Ordnance Research and Development Center, Aberdeen, Maryland, for tests and examination. Ballistic tests revealed the need for armor piercing ammunition with greater penetrative power to defeat the thick oblique armor plate being used. Immediate steps were taken to provide our troops with ammunition for the 90mm guns which possess the required penetrative ability. Three armor piercing rounds for the Gun, 90mm, M3 have been developed and a detailed description of each and comparative penetration performances are presented in this brochure.