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The usual nomenclature of ammunition indicates the diameter of projectile and the length of the cartridge that holds it; for example, 20×102 mm is a 20 mm projectile in a 102 mm long case. Though this designation is often assumed to be unique, this is not always the case, e.g. there are three different 20×110 mm types which are not compatible.
The Zastava M55, also designated 20/3-mm-M55, is a Yugoslavian/Serbian 20mm triple-barreled automatic anti-aircraft gun developed in 1955 and produced by Crvena Zastava (now Zastava Arms company) in Kragujevac, Serbia, for Yugoslav People's Army use and also for the export market.
In 1947, when the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes, the state of California was divided into three numbering plan areas: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [1]
The M940 MPT-SD (multi-purpose tracer, self-destruct) shell is a 20×102 mm round produced by General Dynamics primarily for an anti-aircraft role. It has a range of over 2,000 metres (6,600 ft). It has a range of over 2,000 metres (6,600 ft).
The group on the right measures about 7 mm and was fired at about 90 meters, which equals 7 mm / 90 m = 0.08 mils (0.3 in group at 100 yards, approx. 1.047′×0.3 = 0.314′). In shooting sports , a shot grouping , or simply group , is the collective pattern of projectile impacts on a target from multiple consecutive shots taken in one ...
4 mm» This is a list of firearm cartridges which have bullets in the 3 millimetres (0.12 in) to 3.99 millimetres (0.157 in) caliber range. All measurements are in mm (in).
This is a list of firearm cartridges which have bullets in the 4 millimetres (0.16 in) to 4.99 millimetres (0.196 in) caliber range. All measurements are in mm (in). Rimfire cartridges
Type 4 20 mm twin AA machine cannon was an Imperial Japanese Army (IJA) anti-aircraft gun. It consisted of two Type 98 20 mm AA machine cannon. It was introduced in 1944 and approximately 500 to 616 guns were produced. [1] [2] [3] It was mainly designed for use against ground targets, but was only used in an anti-aircraft role. [4]