Krag-Petersson

Information about Krag-Petersson

Krag-Petersson

Section of the Krag-Petersson
TypeFalling block repeating rifle
Place of originNorway
Service history
In service1876 to 1900
Production history
DesignerO.H.J. Krag and A. Petersson
Designed1872
Number built17 prototypes and preproduction models
30 rifles for Norwegian trials
975 production rifles
115 rifles for Danish trials
Variantsprototypes, production rifles
Specifications
WeightUnknown
LengthUnknown
Barrel length951 mm (37.44 in)

Cartridge12.17 × 44 mm rimfire
ActionFalling block
Rate of fire19 shots a minute when used as a single loader
11 shots in 25 seconds when used with magazine
Muzzle velocity381 m/s (1,260 ft/s)
Effective range900 m (3,000 ft)
Feed system10
SightsV-notch and front post
The Krag-Petersson rifle was the first repeating rifle adopted by the armed forces of Norway, and one of the first repeating arms used anywhere in the world. Developed by Ole Herman Johannes Krag, the action of the Krag-Petersson was uniquely actuated by the oversized hammer. Another distinguishing feature was that the cartridge rising from the magazine was not seated automatically, but had to be pushed into the breech of the rifle.

Testing by the Norwegian military revealed that the Krag-Petersson was a robust, accurate and quick firing weapon, and the Royal Norwegian Navy adopted the rifle in 1876. The rifle was also extensively tested by other nations, but not adopted. After being phased out around 1900, the remaining rifles were sold off to civilians, and often extensively rebuilt. Today it is so difficult to find one in original condition that the Krag-Petersson has been described as "the rifle everybody has heard about, but hardly anybody has ever seen".[1] It was the first rifle designed by Ole H. J. Krag to be adopted by an armed force.

Design and development

Enlarge picture
The action of the Krag-Petersson fieldstripped (refer to the text)
The mechanism was developed by Ole Herman Johannes Krag, with vital help from his friend Axel Petersson on the actuation of the mechanism. Ole H. J. Krag had been experimenting with repeating rifles for several years before he designed the Krag-Petersson rifle. His earlier models had all been actuated by a side mounted lever working on an interior crankshaft.[2] Moving the lever in a half circle counter clockwise made the breechblock – the part of the mechanism that seals the rear of the barrel – move back and down. The rearward movement of the breechblock automatically ejected the spent round and the downward movement allowed the magazine follower to push a new round into the breech. In 1871, Axel Petersson suggested changing the design to allow the hammer to operate the breechblock instead,<ref name="NMG" /> thus making the mechanism both simpler and easier to operate. The Krag-Petersson, like Krag's previous design, featured a tubular magazine under the barrel.

The action of the Krag-Petersson is, as can be seen from the photograph to the left, quite simple compared to modern rifles, consisting only of eight major components: the receiver (A), the hammer (B), the tilting breechblock (C), the firing pin (D), two pins to secure the hammer and breechblock (E and F), a lockplate with a screw to secure the pins (G) and the tubular magazine (not shown in the photograph).

The Krag-Petersson repeating rifle has a falling block action, i.e. the breechblock moves downwards as the mechanism is opened, actuated (operated) by the operation of the exterior hammer. The tubular magazine, containing a total of 10 rounds of ammunition, was placed under the barrel. Once the mechanism was open, an extractor ejected the spent cartridge. A fresh round of ammunition was pushed into a shaped recess on top of the falling block by the spring in the magazine, whereupon the falling block rose slightly. The round could now be pushed into the chamber by the shooter, and the breechblock would rise completely. This rising of the breechblock (by means of a powerful spring) could catch the shooter off guard, resulting in pinched skin on the thumb. The weapon was now ready to fire.

Military trials

Enlarge picture
Spent round is pulled out by the extractor, while a fresh round is pushed into the "bed" on the breechblock.
Enlarge picture
The new round is chambered manually, and the breechblock rises while the hammer stays cocked.
In 1872 Krag presented his design to a Norwegian/Swedish Artillery Committee.<ref name="NMG" /> Towards the end of 1872, this committee reported its findings. It was recommended that a refined model of the Krag-Petersson should be tested further. These tests were undertaken in 1873 and 1874,<ref name="NMG" /> with generally positive findings. The reports in particular praised the accuracy of the rifle, the rate of fire and the fact that the ejector worked without fail. The reason for the last praise was that the ejector on the Remington M1867 – the standard rifle in the Norwegian Army – often did not eject the empty cartridge when the rifle had been fired for a while.

During development, it was found that the rifle was not only solidly designed and well engineered, but it was also capable of firing 18 to 19 aimed shots a minute when used as a single loader – faster than the standard Remington M1867's 13 aimed shots a minute. When used as a magazine loader, it was found that 11 shots – ten in the magazine and one in the chamber – could be fired in 25 seconds. Tests carried out during the evaluation also indicated that the rifle was more accurate than the Remington M1867,<ref name="NMG" /> although both weapons were firing the same ammunition from identical barrels. The rifle was also found to be extremely rugged – one of the tests carried out consisted of throwing the rifle repeatedly from a height of 4 meters (12 ft) towards a rocky surface in order to see if any of the rounds in the magazine would go off.<ref name="NMG" /> Even modern firearms would be damaged by this treatment, but the Krag-Petersson survived it with only superficial damage to the woodwork.

After the tests were concluded, the committee recommended that several Krag-Petersson rifles be manufactured and distributed to a selected army unit for troop trials. After careful consideration 30 rifles were manufactured and issued to the King's Guard for use on their annual exercises in 1875.<ref name="NMG" /> These 30 rifles differ from the later rifles by being 35 mm (1.4 in) shorter. During the troop trials, roughly 500 rounds were fired from each rifle, or about 15,000 in total. The feedback on the rifles was excellent, comparing it most favourably to the standard Remington M1867 rifles. The function of the extractor was particularly praised in the official reports.<ref name="NMG" />

Despite this, the committee did not recommend the Krag-Petersson as a standard issue weapon for the Norwegian and Swedish armies, primarily because the round it was designed around was considered to be obsolete. At the same time, the committee had already started testing the Jarmann M1884 bolt action rifle.<ref name="NMG" /> However, the Royal Norwegian Navy decided to adopt it as their standard arm in 1876,<ref name="NMG" /> pointing out that they still were using the old M1860 "Kammerlader" ("chamber-loader") modified to fire the 4 linjer rimfire round. It was also clear that the Jarmann, if adopted, would first be issued to the Army, leaving the Navy without a modern arm for at least another decade.

Deployment

Enlarge picture
The 12.17 mm rimfire round used in the M1867 and the Krag-Petersson.
The initial order placed by the Royal Norwegian Navy for the Krag-Petersson was for 450 rifles, but the order was later amended to raise the total to 975. The weapon was ordered and delivered complete with the requisite equipment, such as a tampion, oil bottle and straps.

The weapon as approved for use was chambered for the 4 "linjer" rimfire ammunition already in use in the Remington M1867 rifles by Norwegian and Swedish armed forces, and apparently equipped with identical barrels to the Remington. While the ammunition was nominally 4 linjer, the calibre of the barrel was 3.88 linjer (12.17 mm or 0.479 in), while the uncoated lead bullet had a diameter of 4.021 linjer (12.62 mm or 0.497 in).

Since Kongsberg Våpenfabrikk – the main armoury in Norway – was occupied manufacturing Remington M1867s for the Norwegian army, the Krag-Peterssons were manufactured partly by Carl Gustafs Stads Gevärfaktori (serial numbers 1 through 200 and 301 through 700)<ref name="NMG" /> in Sweden, and partly by Carl Johans Vern (serial numbers 201 through 300 and 701 through 975)<ref name="NMG" /> in Norway. A handful (around 17)<ref name="NMG" /> were manufactured at Kongsberg Våpenfabrikk, although these were most likely development models and prototypes, since Krag was working there at the time.

Bayonet for the Krag-Petersson

Enlarge picture
The bayonet for the Krag-Petersson
For each rifle a bayonet was also issued,<ref name="NMG" /> each individually numbered to the rifle to which it belonged. The bayonet was a so-called sabre bayonet, with a yatagan (S-shaped) blade and a prominent fuller, a wooden grip and brass guard and pommel. By modern standards the bayonet was rather large, with a total length of 71 cm (28 in), of which 57 cm (22.5 in) was the blade. Today, a bayonet in original condition is as hard to find as the Krag-Petersson itself, and it is often mistaken for a Remington M1867 bayonet. A well-preserved bayonet can fetch around $1,000 U.S. if it is in good condition.

The bayonet was almost identical to the bayonet issued with the Remington M1867, but was numbered on the guard as opposed to the blade itself. The available sources seems to indicate this was done because the bayonets were fitted to the rifles after the blade had been hardened, while the bayonets for the M1867 was fitted to the M1867 before the blade was hardened. The reason for this is that Kongsberg Våpenfabrikk manufactured the bayonets, and shipped them to Carl Johans Vern where they were fitted to the individual rifles.

Evaluation in other countries

The Krag-Petersson was one of the earliest repeating rifles in the world, and as such generated considerable interest in Europe and the rest of the world. It was tested by several countries, but despite good reports and much praise was not adopted by any other nation than Norway. Most probably, the main reason for this is that the rifle was designed around an outdated cartridge, and there was doubt that the action could be modified for more powerful ammunition.

In 1876, the Danish military tested two preproduction rifles<ref name="NMG" /> delivered from Norway, and were impressed enough to manufacture slightly modified 115 Krag-Peterssons in 1877 for troop trials. Despite the good results, the Danes decided not to adopt the Krag-Petersson. Krag did not receive any royalties on the production in Denmark, but was later made a knight of the Order of the Dannebrog, as thanks for his efforts both with the Danish Krag-Peterssons and for his efforts with the Krag-Jørgensen the Danes adopted in 1889.

France also tested the Krag-Petersson, and adopted – without asking – the "magazine regulator" of the Krag-Petersson for their own Kropatschek rifle.<ref name="NMG" /> As a form of compensation, Krag was later made a knight of Légion d'honneur. It is also known that Russia and Brazil tested the Krag-Petersson, without adopting it, and that Krag travelled Europe extensively to market the Krag-Petersson.

Fate of the Krag-Petersson rifles

The Krag-Petersson remained in use in the Royal Norwegian Navy for almost 25 years, alongside the Jarmann, and, from 1896, the Krag-Jørgensen. By 1900 they were considered obsolete and sold off to civilians,<ref name="NMG" /> many of whom rebuilt the rifles to centerfire and in a few cases to shotguns. The details of the sales are lacking, although it is known that in 1928 only 70 Krag-Peterssons remained in military warehouses.<ref name="NMG" /> It is likely that these were considered unsellable and scrapped. Today the Krag-Petersson is very rare, and unaltered specimens can fetch high prices – anywhere from 2,000 USD and up.

As a curiosity, Roald Amundsen owned a Krag-Petersson with the serial number 168,<ref name="NMG" /> probably bought from the Royal Norwegian Navy just after 1900. It is unclear if this rifle accompanied him on expeditions, but it is on display at the Fram museum in Oslo.

Comparison with contemporary rifles

The Krag-Petersson is often said to be a good rifle. By comparing it to the Remington M1867, which was the standard issue rifle in the Norwegian Army, as well as against the standard service rifles of Germany, France and the United Kingdom at the time, it is quite clear that the Krag-Petersson suffered from having been designed for an outdated cartridge.

Rifle Krag-Petersson Remington M1867 Mauser Gewehr 71 Gras rifle Martini-Henry
Accuracy at 600 m82 cm (32 in)96 cm (37.8 in)80 cm (31 in)89 cm (35 in)Unknown
Enfilading[3]300 m (984 ft)300 m (984 ft)350 m (1,150 ft)379 m (1,243 ft)346 m (1,135 ft)
Effective range900 m (2,953 ft)900 m (2,953 ft)UnknownUnknown1,372 m (4,500 ft) [4]
Rate of fire19 or 28 (see article)13UnknownUnknown8 to 12<ref name="MH" />
Magazine capacity10NoneNoneNoneNone
Calibre12.17x44 rimfire12.17x44 rimfire11.15x60R center fire11x59R center fire.577/450 (11.455x65R) center fire
Muzzle velocity381 m/s (1,250 ft/s)381 m/s (1,250 ft/s)430 m/s (1,411 ft/s)455 m/s (1,493 ft/s)416 m/s (1,365 ft/s)
Barrel length951 mm (37.44 in)951 mm (37.44 in)UnknownUnknown840 mm (33 in)
Total lengthUnknown1355 mm (53.3 in)UnknownUnknown1245 mm (49 in)
Loaded weightUnknown4.32 kg (9.6 lb)UnknownUnknown3.83 kg (8.5 lb)

See also

Other Norwegian rifles: Comparable weapons from the same era:

Notes and references

  • Hanevik, Karl Egil (1998). Norske Militærgeværer etter 1867. Hanevik Våpen. ISBN 82-993143-1-3. Chapter 2 and appendix A
  • Last retrieved 18 August 2005
1. ^ Last retrieved 18 August 2005
2. ^ Hanevik, Karl Egil (1998). Norske Militærgeværer etter 1867
3. ^ By enfilading it is meant the range at which the path of the bullet would pass through a man-sized target.
4. ^ The Martini Henry rifle retrieved 22 August 2005


External links


Norwegian service rifles
''Kammerlader, Remington M1867, Krag-Petersson, Jarmann M1884, Krag-Jrgensen, Lee-Enfield No. 4 (used during World War II), Pattern 14 Rifle (used during World War II), Karabiner 98k (spoils of war), Selvladegevr M1 (Garand), M1917 Enfield rifle (replaced the Lee-Enfields), AG-3, Vpensmia NM149

falling-block action (also known as a sliding-block action) rifle is a single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the rifle and actuated by a lever.
..... Click the link for more information.
A repeating rifle is a single barreled rifle containing multiple rounds of ammunition. These rounds are loaded from a magazine by means of a manual or automatic mechanism, and the action that reloads the rifle also typically recocks the firing action.
..... Click the link for more information.
Motto
Royal: Alt for Norge ("Everything for Norway")
1814 Eidsvoll oath:
Enige og tro til Dovre faller
("United and faithful until the mountains of Dovre crumble")

Anthem
Ja, vi elsker

..... Click the link for more information.
Ole Herman Johannes Krag (1837 – 1916) was a Norwegian gun designer. He designed a wide range of firearms during his lifetime, but only two – the Krag-Petersson and the Krag-Jørgensen – were adopted by any armed forces.
..... Click the link for more information.
Axel Petersson was a Swedish engineer who may be best known for helping Ole Herman Johannes Krag with a rifle design. The importance of his aid is best made clear by the fact that Ole H J Krag insisted on calling the finished rifle Krag-Petersson.
..... Click the link for more information.
The barrel of a gun or other firearm is the tube, usually metal, through which a controlled explosion is released in order to propel a projectile out of the end at great speed.
..... Click the link for more information.
cartridge or round packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm. The primer is a small charge of impact-sensitive chemical that may be located at the center of the case head (centerfire
..... Click the link for more information.
action is the system of operation used to load rounds and/or seal the breech. In many weapons a breechblock reciprocates in the receiver of the firearm.

The term is also used for the physical parts inside the weapon that carry out the system of operation.
..... Click the link for more information.
Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. It is usually measured in rounds per minute (RPM or round/min), or per second (RPS or round/s).
..... Click the link for more information.
muzzle velocity is the speed at which the projectile leaves the muzzle of the gun. Muzzle velocities range from subsonic (below 330 m/s / ~1080 ft/s) for some pistols to more than 1,800 m/s (~5910 ft/s) for tank guns firing kinetic energy penetrator ammunition.
..... Click the link for more information.
A repeating rifle is a single barreled rifle containing multiple rounds of ammunition. These rounds are loaded from a magazine by means of a manual or automatic mechanism, and the action that reloads the rifle also typically recocks the firing action.
..... Click the link for more information.
A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves ("rifling") cut into the barrel walls. The grooves are known as "rifling", and produce raised areas called "lands," which make contact with the projectile (for
..... Click the link for more information.
Motto
Royal: Alt for Norge ("Everything for Norway")
1814 Eidsvoll oath:
Enige og tro til Dovre faller
("United and faithful until the mountains of Dovre crumble")

Anthem
Ja, vi elsker

..... Click the link for more information.
Ole Herman Johannes Krag (1837 – 1916) was a Norwegian gun designer. He designed a wide range of firearms during his lifetime, but only two – the Krag-Petersson and the Krag-Jørgensen – were adopted by any armed forces.
..... Click the link for more information.
action is the system of operation used to load rounds and/or seal the breech. In many weapons a breechblock reciprocates in the receiver of the firearm.

The term is also used for the physical parts inside the weapon that carry out the system of operation.
..... Click the link for more information.
cartridge or round packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm. The primer is a small charge of impact-sensitive chemical that may be located at the center of the case head (centerfire
..... Click the link for more information.
The Norwegian Defence Forces (Norwegian: Forsvaret) numbers about 30,000 personnel, including civilian employees.[1] According to current (as of 2006) mobilisation plans, the strength during full mobilisation is approximately 130,000 combatant personnel.
..... Click the link for more information.
Royal Norwegian Navy (often abbreviated as RNoN) is the branch of the Norwegian Defence Force responsible for naval operations. As of 2006, the Navy consists of approximately 3,700 personnel (9,450 if mobilized, and 32,000 if fully mobilized) and 70 vessels, including 3
..... Click the link for more information.
Ole Herman Johannes Krag (1837 – 1916) was a Norwegian gun designer. He designed a wide range of firearms during his lifetime, but only two – the Krag-Petersson and the Krag-Jørgensen – were adopted by any armed forces.
..... Click the link for more information.
Axel Petersson was a Swedish engineer who may be best known for helping Ole Herman Johannes Krag with a rifle design. The importance of his aid is best made clear by the fact that Ole H J Krag insisted on calling the finished rifle Krag-Petersson.
..... Click the link for more information.
A breechblock (or "breech block") is the part of the firearm action that closes the breech of a weapon (whether small arms or artillery) at the moment of firing.

Most modern small firearms use a rotating breechblock, better known as a bolt, first used in manually operated
..... Click the link for more information.
The firing pin or striker is part of the firing mechanism of a firearm. The firing pin may take many shapes, but all firing pins have a small, rounded portion designed to strike the primer of a cartridge, detonating the priming compound, which then ignites the propellant.
..... Click the link for more information.
falling-block action (also known as a sliding-block action) rifle is a single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the rifle and actuated by a lever.
..... Click the link for more information.
A breechblock (or "breech block") is the part of the firearm action that closes the breech of a weapon (whether small arms or artillery) at the moment of firing.

Most modern small firearms use a rotating breechblock, better known as a bolt, first used in manually operated
..... Click the link for more information.
magazine (also called a mag or, commonly but incorrectly, especially when removable, a clip) is an ammunition storage and feeding device within or attached to a firearm. Magazines may be integral to the firearm (fixed) or removable (detachable).
..... Click the link for more information.
cartridge or round packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm. The primer is a small charge of impact-sensitive chemical that may be located at the center of the case head (centerfire
..... Click the link for more information.
The barrel of a gun or other firearm is the tube, usually metal, through which a controlled explosion is released in order to propel a projectile out of the end at great speed.
..... Click the link for more information.
action is the system of operation used to load rounds and/or seal the breech. In many weapons a breechblock reciprocates in the receiver of the firearm.

The term is also used for the physical parts inside the weapon that carry out the system of operation.
..... Click the link for more information.
cartridge or round packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm. The primer is a small charge of impact-sensitive chemical that may be located at the center of the case head (centerfire
..... Click the link for more information.
Motto
Royal: Alt for Norge ("Everything for Norway")
1814 Eidsvoll oath:
Enige og tro til Dovre faller
("United and faithful until the mountains of Dovre crumble")

Anthem
Ja, vi elsker

..... Click the link for more information.

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