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(Redirected from 25mm caliber)
Specific size of autocannon ammunition
25×137mm M793 target practice with tracer (TP-T) rounds for the MK-38 being inspected
25 mm caliber is a range of autocannon ammunition. It includes the NATOstandardized Swiss 25×137mm, the Swiss 25×184mm, the Soviet 25x218mmSR, and the Chinese 25×183mmB.
Usage
The 25 mm round can be used for anti-materiel or anti-personnel purposes. In the anti-personnel role, a 25 mm weapon armed with HE rounds can kill large numbers of opposing troops either in the open or in light fortifications. In the anti-materiel role, a 25 mm weapon armed with armor-piercing rounds can disable many types of aircraft and ground vehicles, including some main battle tanks.
Japanese 25×163mm ammunition from a post-war US technical manualA diagram of the M791 25×137mm round
Several sub-types of the NATO 25 mm ammunition are available—the most common being armor-piercing, high-explosive, sabot, tracer, and practice rounds. Cartridges are usually composed of a combination of the aforementioned categories. For example, the M791 is an armor-piercing discarding sabot with tracer (APDS-T) round. It is used against lightly armored vehicles, self-propelled artillery, and aerial targets such as helicopters and slow-moving fixed-wing aircraft.
Switzerland
United States
France
China
Soviet Union
Sweden