7.92×33mm Kurz

The 7.92×33mm Kurz has a 2.22 ml (34.3 grain H2O) cartridge case capacity. 7.92×33mm Kurz maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm). Americans define the shoulder angle at alpha/2 ≈ 17.5 degrees. The common rifling twist rate for this cartridge is 240 mm (1 in 9.45 in), four grooves, Ø lands = , Ø grooves = , land width = and the primer type is Berdan or boxer (in large rifle size). According to the official Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives (C.I.P.) rulings, the 7.92×33mm Kurz can handle up to Pmax piezo pressure. In C.I.P. regulated countries every rifle-cartridge combination has to be proofed at 125% of this maximum C.I.P. pressure to certify for sale to consumers. == Military designation ==

In German military instructions, the caliber was often deemed unimportant; the name was emphasized. The 7.92×33mm Kurz was referred to as the (pistol cartridge model 1943) or (pistol ammunition model 1943). This was part of the same duplicity under which the StG44 was originally designated as a "machine pistol" to disguise the true nature of the weapon from Hitler. After the eventual approval and acceptance of the Sturmgewehr 44, it was redesignated as the "short cartridge model 1943" (). ==Background==

(pistol cartridge)7.92×33mm Kurz (intermediate cartridge)7.92×57mm (fully powered cartridge) The cartridge was the same caliber, and had the same base diameter, as the 7.92×57mm, The 34% weight reduction compared to full-length 7.92×57mm Mauser s.S. ball ammunition meant that a soldier could carry more rounds of ammunition, for an increase in sustained suppressive fire capability. The shortage of brass in the later stages of World War II led to the use of steel cases for this new cartridge. The Kurz cartridge incorporated more taper than the parent case to increase reliability in feed from magazines (and because the cartridge retained the same base diameter and caliber as the longer, full-size round, requiring a more abrupt taper). This led to the distinctive curved magazine for weapons that used this cartridge, which became popularly known as "banana magazine", due to their curved shape, and which can be seen on other weapons using distinctly tapered cartridges, like the 7.62×39mm chambered in Kalashnikov rifles. The steel cases were typically lacquer-coated to prevent corrosion. Most projectile variants featured a boat tail and bullets designated with m.E. - mit Eisenkern ("with iron core") mild steel cored projectiles were developed to save on lead and other metals that became scarce in Germany during World War II. ==Cartridge variants==

During World War II the 7.92×33mm Kurz round was produced in a relative limited amount of variants, when compared to the full-power 7.92×57mm Mauser round. The German military used 7,9mm as designation and generally omitted any diameter reference and only printed the exact type of loading on ammunition boxes during World War II. Ammunition boxes can have i.L. or in Ladestreifen added, meaning the containing 7.92×33mm Kurz rounds are provided in stripper clips. ;Pist. Patrone 43 m.E. :m.E. - mit Eisenkern ("with iron core") — projectile with mild steel core, ballistic coefficient of approximately 0.132 (G7 BC) ;'''Pist. Patr. 43 L'spur''' :L'spur - Leuchtspur ("tracer") ;'''Pist. Patr. m.E.L'spur''' :m.E.L'spur - mit Eisenkern Leuchtspur ("iron core, tracer") ;Pist. Platzpatr. 43 :Platz ("blank") ;Pist. Treibpatrone 43 :Treib ("booster charge for rifle grenades") ;Pist. Expatrone 43 :Exerzier ("drill") dummy rounds for aiming exercises ;Pist. Werkzeugpatrone :Werkzeugpatrone ("tool cartridge") dummy rounds for examining the functioning of a firearm action ==Chambered firearms==

44) Prior to the development of the Kurz round and its associated weapons, two basic small arms existed to equip the regular infantryman, the bolt-action rifle and the submachine gun. The bolt-action rifle was the standard small arm for most of the world's armies, usually incorporating good accuracy and stopping power, but with a very limited rate of fire. The submachine gun was a newer piece of equipment, which offered a very high rate of fire, and a compact size, but was of very limited range and stopping power due to the pistol round (usually 9 mm) it fired. While the Kurz round did not match the range and accuracy of a full power round fired by a traditional bolt-action rifle, it could still engage individual targets out to . As an effective, intermediate-sized cartridge, the 7.92×33mm Kurz round was a key evolution in the development of the assault rifle by providing a combination of controllable automatic fire and acceptable accuracy at ranges most likely to see infantry combat. Only a few weapons used this round, most notably the Sturmgewehr 44 – the first assault rifle to be accepted into widespread service and put into mass production – and the Gustloff Volkssturmgewehr. A number of weapons in development at the time also used the cartridge, including the Sturmgewehr 45, HIW VSK, Wimmersperg Spz-kr, Grossfuss Sturmgewehr; and a number of German and Czech prototype weapons made during World War II and a small number of prototype weapons made in other countries after the war. An unknown number of late-war K43 rifles were chambered for this cartridge and modified to accept MP 44 magazines. Variants of the VK 98 (Volks-Karabiner), a so-called last-ditch bolt-action rifle intended for the Volkssturm Home Guard, were also chambered for this cartridge with unknown quantities produced by Mauser and Steyr. A small number of Remington XP-100 bolt-action target pistols were made in 7.92×33mm Kurz. Lothar-Walther manufactures new Mauser 98 barrels chambered in 7.92×33mm Kurz. In 2010, a gunsmith Eric Kinsel was dealing with a shortage of the rare ammunition for the AMT pistol. He discovered that the case length of 7.92x33mm Kurz was almost identical to 33mm cartridges such as .30 carbine and .50AE etc., and handloaders could simply reverse the bullets in the cases to have a much cheaper source of ammunition and fit into existing magazines. While the boat-tailed bullets performed acceptably, there was little demand and few conversion barrels were produced. Schwaben Arms GmbH of Rottweil, Germany offers newly made K98k rifles in 7.92×33mm Kurz (also known as 8x33 in Europe) in addition to 8mm Mauser and .308 Winchester. ==Post-World War II==

After World War II, the cartridge was tested and used in prototype rifles in Argentina and Belgium, amongst other nations, during the late 1940s and early 1950s. The first FN FAL prototype was designed to fire the cartridge when NATO was organized. After the war it was manufactured by East Germany (the German Democratic Republic), the Czechoslovak Socialist Republic, and Egypt. Spain continued development after the war, creating a few variants of the cartridge, such as tracer rounds, boat-tailed rounds and slightly shorter bullets that have a lead core. These developments were encouraged by Calzada Bayo, a Spanish lieutenant colonel. However, they were cancelled in favour of a more radical cartridge, 7.92×40mm CETME. Finally, Spanish CETME rifles were chambered for a variant of the 7.62×51mm NATO round. Demand for the ammunition still exists, as the StG 44 is still in use by some within the Lebanese Forces militia, Djibouti and Pakistan as well as irregular forces in some countries in the Horn of Africa and the Middle East, where captured German arms were distributed as military aid by Eastern Bloc countries as well as Yugoslavia. It is currently manufactured by the Prvi Partizan factory in Užice, Serbia. There is also some demand on the private collectors' market; reloadable cartridge cases can be produced by resizing and trimming 7.62×51mm NATO cases, and Hornady makes a 125-grain bullet for this caliber suitable for handloads. 44 Bore In Pakistan, the same cartridge is also reported to be in use by the local name of "44 Bore". This either refers to the 44 of the MP44/StG44 series or the "L44A1" inscription found on the headstamps on necked-down 7.62×51mm cartridge cases. It is used in locally made AK-pattern weapons in semi-automatic only (produced or converted in Peshawer, Kohat and Derra Adam Khel, etc.) that chamber this cartridge, since 7.62×39mm is a restricted caliber (known as "prohibited bore" or "PB" in Pakistan). These AK-pattern weapons are usually considered inferior due to inconsistent gunsmithing of weapons chambered or converted for this cartridge and lack of quality control of the ammunition. It is sometimes used by private security companies. The usage of 7.92 mm bullets in 7.62 mm barrels without reboring is not considered to be a safe practice. The use of the 44 bore cartridge was a loophole in the law until specifically banned in 2012. ==See also==