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20 mm caliber is a specific size of popular autocannon ammunition. The dividing line between smaller-caliber weapons, commonly called " guns ", from larger-caliber " cannons " (e.g. machine gun vs. autocannon ), is conventionally taken to be the 20 mm round, the smallest caliber of autocannon.
The M2 .50 caliber heavy machine gun and MK19 automatic grenade launcher (40 mm) are available for use by dismounted infantry, though they are more commonly vehicle-mounted. Precision fire is provided by the M110 Semi-Automatic Sniper System and M40A3, A5, A6 bolt-action sniper rifle.
This category aggregates articles pertaining to sniper rifles that fire the 20 mm caliber. Pages in category "20mm sniper rifles" The following 8 pages are in this category, out of 8 total.
The inner width of the rim on which the tire is mounted should be about 65% of the tire's nominal section width for tires smaller than 30 mm and 55% for those larger. The section height of a tire is usually identical to its section width (for tires less than 28 mm, 2.5 mm have to be added to the width to get the height).
Japan used three models of 20–25 mm anti-air guns—the Type 2 20 mm AA machine cannon, the Type 98 20 mm AA machine cannon and the Type 96 25 mm AT/AA Gun, the Type 2 being essentially a Japanese variant of the Flak 38, while the Type 98 has inferior ballistic performances and a higher rate of fire compared to the 72-K. However, the Type 98 ...
It was based on necking down the .32-20 Winchester. In the early 20th century, it was a popular small game and varmint round, developing around 1,460 ft/s with 86-grain bullets. But two years earlier Marlin Firearms Co. had already necked down the .32-20 Winchester, and called it the .25-20 Marlin.
For example, factory and aftermarket receivers using the Remington 700 footprint are produced with various types of action threads, all with a 26.99 mm (1 + 1 ⁄ 16 in) diameter, but with a pitch of either a 1.588 mm (16 TPI, Remington standard), 1.411 mm (18 TPI) or 1.270 mm (20 TPI, Savage standard).
The Oerlikon KBA 25 mm is a fully automatic cannon based on the proven gas-operation principle with a rotating bolt head similar to the Mauser M 98 or M16 and double belt feed for the ammunition. The KBA offers a wide range of firing modes: single shot, programmable rapid single shot with a rate of fire programmable from 100 to 175 rds/min and ...