7.62×45mm vz. 52
|7.62×45mm vz. 52|
|Place of origin||Czechoslovakia|
|Case type||Rimless, bottleneck|
|Bullet diameter||7.83 mm (0.308 in)|
|Neck diameter||8.66 mm (0.341 in)|
|Shoulder diameter||10.56 mm (0.416 in)|
|Base diameter||11.30 mm (0.445 in)|
|Rim diameter||11.30 mm (0.445 in)|
|Rim thickness||1.50 mm (0.059 in)|
|Case length||45.00 mm (1.772 in)|
|Overall length||60.00 mm (2.362 in)|
|Case capacity||2.79 cm3 (43.1 gr H2O)|
|Rifling twist||280 mm (1 in 11.03 in)|
|Primer type||Berdan rifle|
|Maximum pressure (C.I.P.)||430.00 MPa (62,366 psi)|
|Test barrel length: 520 mm (20.472 in)|
The 7.62×45mm vz. 52 (designated as the 7,62 × 45 by the C.I.P.) is a rimless bottlenecked rifle cartridgerifle cartridge developed in Czechoslovakia. It is fired by the Czech vz. 52 rifle, Vz. 52 machine gun and ZB-530 light machine gun. The round was later dropped from use when the Czech converted to the standard Warsaw Pact round, the 7.62×39mm (fired by vz. 52/57 rifle and vz. 52/57 light machine gun). Its ballistics and energy are slightly higher than that of the 7.62×39mm M43 cartridge.
There are definite differences in reported dimensions for this cartridge. Some of this may be accounted for by small errors in conversion from metric to inches, while others such as loaded length may additionally be attributed to different lengths of bullets being measured in loaded rounds. A sample list of various measurements is in the table below.
|Source||Case length||Overall (loaded) length||Bullet weight||Loaded weight|
|Cartridges of the World ||44.958 mm (1.77 in)||59.94 mm (2.36 in)||-||-|
|Cartridge Corner ||44.958 mm (1.77 in)||57.40 mm (2.26 in)||-||-|
|Handloader's Manual of Cartridge Conversions ||44.80 mm (1.764 in)||62.23 mm (2.45 in)||-||-|
|40 let konstruktérem zbraní 1946–1986 ||45 mm (1.772 in)||60 mm (2.362 in)||8.5 g||18.9 g|
|Československé automatické zbraně a jejich tvůrci ||44.9 mm (1.768 in)||60 mm (2.362 in)||8.5 g||18.9 g|
The 7.62×45mm case is also used as the parent case for a modified variant that is not officially registered with or sanctioned by the C.I.P. or its American equivalent, the SAAMI. Such cartridges which use commercial factory cases are generally known as wildcats. By changing the shape of standard factory cases (decreasing case taper and/or changing the shoulder geometry) the wildcatter generally increases the case capacity of the factory parent cartridge case, allowing more propellant to be used to generate higher velocities. Besides changing the shape and internal volume of the parent cartridge case, wildcatters also can change the original calibre. A reason to change the original calibre can be to comply with a minimal permitted calibre or bullet weight for the legal hunting of certain species of game or change external or terminal ballistic behavior. In his spare time Chis E. Murray has been developing the ultimate military cartridge which he calls the 7×46mm Universal Intermediate Assault Cartridge. The 7×46mm is designed to replace both the 5.56mm and 7.62mm NATO cartridges. It is low recoil and so can be used from carbines, but has long enough range to be used in machine guns and marksmen rifles. Its overall length has been optimized so that guns chambering it would be bigger than an AR-15 but smaller than a AR-10.
7.62x45mm cartridge on the left and a 7.62×39mm cartridge on the right.
- Barnes, Frank C. (2006). McPherson, M.L., ed. Cartridges of the World (11th Edition ed.). Gun Digest Books. pp. 354, 375. ISBN 0-89689-297-2.
- C.I.P. TDCC datasheet 7,62 x 45
- Donnelly, John J. (1987). The Handloader's Manual of Cartridge Conversions. Stoeger Publishing. p. 846. ISBN 978-0-88317-269-8.
- Čermák, Jiří (1999). 40 let konstruktérem zbraní 1946–1986 (Od samopalu ČZ 247 ke zbraňovému kompletu LADA). Brno: Ardent. ISBN 80-238-3397-9.
- Popelínský, Lubomír (1999). Československé automatické zbraně a jejich tvůrci. Praha: Naše vojsko. ISBN 80-206-0567-3.
- 7x46mm UIAC (Universal Intermediate Assault Cartridge)
- Major Thomas P. Ehrhart Increasing Small Arms Lethality in Afghanistan: Taking Back the Infantry Half-Kilometer. US Army. 2009