30x165mm

30x165mm refers to a specific caliber of ammunition. The "30" indicates the projectile diameter in millimeters, and the "165mm" denotes the length of the cartridge case in millimeters. This designation is commonly associated with the 30x165mm R, a Soviet/Russian tank gun cartridge. It was developed for the 76mm F-34 tank gun and its variants, which were used in tanks such as the T-34, KV-1, and SU-85 during World War II and beyond. The R in the designation signifies that it is a rimmed cartridge, a characteristic that aids in the extraction of spent casings from the gun. This caliber fired various types of projectiles, including armor-piercing, high-explosive, and fragmentation rounds, making it a versatile ammunition type for its intended roles. While no longer in widespread use for modern main battle tanks, the 30x165mm caliber represents a significant piece of Soviet military ordnance history.