En-Block clip loaded with 10 rounds of .276 Pedersen. Image from Pedersen Patent

Overview

The .276 Pedersen round was an experimental 7 mm cartridge developed for John Pedersen's competitor to the M1 Garand Rifle. Developed in 1923 by the United States and intended as a possible cartridge to replace the .30-06 Springfield in new semiautomatic rifles and machine guns. Originally, M1 Garand rifles were chambered for the .276 Pedersen, which held ten rounds in its unique en-bloc clips. The .276 Pedersen was a shorter, ligher round than the .30-06, which made the design of a autoloading rifle easier than the long, powerful .30-06. The US Army rejected the .276 Pedersen, because it considered a .30 caliber round a minimum for reliable production of disabling wounds. Because of the factors of a looming war and massive stockpiles of ammunition remaining from WW I, a caliber change was probaly ill advised. 1923 was a common year starting on Monday (link will take you to calendar). ... Eight . ... A semi-automatic firearm automatically loads a round into the chamber after the weapon is fired, but still requires a trigger pull for each round that is fired. ... M1 Garand battle rifle The M1 Garand (more formally the United States Rifle, .30 Caliber, M1) was the first semi-automatic rifle to be put in active military service. ... A rifle is any long gun which has a rifled barrel. ... A clip is a device pushed into the magazine of a firearm to load it in one action. ... The Army is the branch of the United States armed forces which has primary responsibility for land-based military operations. ...

Despite the initial rejection of the .276 Pedersen, the concept of an itermediate power military cartidge of a 6.5 to 7 mm diameter is far from dead. Current attempts to improve upon the current 5.56 x 45 mm NATO cartridge include the 6.8 x 43 mm (0.277 in) Remington SPC and 6.5 x 38 mm (0.264 in) Grendel. U.S. Military 5. ... Grendel is a monster in the Anglo-Saxon epic poem Beowulf, feared by all save Beowulf himself. ...

History and Technical Notes

Pedersen's round was actually a true 7 mm (0.284 in) and designed to be a mid-power cartridge akin to the Italian 6.5 x 52 mm (0.264 in) Carcano or the Japanese 6.5 x 50 mm (0.264 in) Arisaka. Surviving examples have bullets of 140 or 150 grains (9.1 or 9.7 g). It was supposed to produce a velocity of around 2400 feet per second (732 m/s). Its case was two inches (51 mm) long and severely tapered. If adopted, this would have cut the necessary weight of all weapons built for it, and required the use curved detachable magazines similar to that of the Bren or later Kalashnikov. Lee Harvey Oswalds Model 91/38 Carcano short rifle, in the US National Archives Carcano is a series of Italian bolt-action rifle military rifles. ... Arisaka rifle Nationality Japan Type bolt-action rifle Inventor Nariakira Arisaka Date of design ?? Service duration 1905 - 1945 Cartridge 6. ... Bren Gun Type Light machine gun Nationality United Kingdom Era World War II History Date of design 1935 Production period 1938 - Service duration 1938 - 1958 (longer as L4) Operators United Kingdom, Commonwealth War service World War II, Korean War, Specifications Type machine gun Calibre . ... The word Kalashnikov can mean: The AK-47 rifle, that means Avtomat Kalashnikova, or another rifle in that series. ...

Pedersen's cartridge was viewed as a poor compromise. As a rifle cartridge it was slightly underpowered compared to other military rifle cartridges of its time. As a cartridge for an assault rifle (a concept yet to be developed) it was too long and overpowered. No one has attempted to revive it, and surviving examples of the .276 Pedersen cartidges are sought after collectors items. M16A2 (American). ...

Immediately after World War Two, British designers introduced a series of 7mm cartridges as an answer to the Germans' highly successful 7.92 x 33 mm Kurz and various studies on the matter. The U.S. stuck with .30 caliber mostly out of a desire to have a common cartridge between rifle and machinegun combined with the percieved necessity for effectiveness out to 2000 yards! Development of a shorter .30 caliber round specifically for use in an autloading rifle began after the war, and resulted in the 7.62x51 mm NATO, a shorter and easier to feed round that gave nearly identical ballistics to the .30-06. Interestingly, British studies culminated in the 280/30 which was merely a 7.62x51 mm NATO necked down to take a 7mm bullet essentially duplicating the modern 7mm-08 sporting round. German soldiers at the Battle of Stalingrad World War II was the most extensive and costly armed conflict in the history of the world, involving the great majority of the worlds nations, being fought simultaneously in several major theatres, and costing tens of millions of lives. ... Heinrich Kurz von Goldstein Hermann Kurz Isolde Kurz, the daughter of Hermann Kurz Robert Kurz, see German article Walther PP Kurz 9 mm Kurz K band, from Kurz band See also Kurtz, Kurts Curz, Curtz This is a disambiguation page — a navigational aid which lists pages that might otherwise share... NATO 7. ... NATO 7. ...

References

• Cartridges of the World. Frank C. Barnes.
• Handloader's Manual of Cartridge Conversions. Donnelly + Townsend
• Guns. Chris McNab
• Book of Combat Arms 2005. Guns and Ammo Magazine
• Various articles in The American Rifleman. RifleShooter and Guns and Ammo magazines.