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The 8×58mmR Danish Krag, also known as the 8×58mmRD, is a late 19th-century rimmed
8×58mmR Danish Krag cartridge dimensions. All sizes in millimeters (mm). The dimensions of this drawing come from the ammunition manufacturer RWS and differ somewhat between various sources.
Americans define the shoulder angle at alpha/2 ≈ 16.5 degrees. Ø lands = , Ø grooves = .
There are no official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings for this cartridge (2017).
Varying sources quote the 8×58mmR Danish Krag can handle from up to Pmax piezo pressure. This Pmax level range is extreme, so loading up to a high Pmax level can be dangerous in historic arms.
A dangerous error can occur when confusion occurs between the 8×58mmR Danish Krag and the 8×58mmR. The latter being an old German differing chambering.
centerfire
Two rounds of .357 Magnum, a centerfire cartridge; notice the circular primer in the center
A center-fire (or centerfire) is a type of metallic cartridge used in firearms, where the primer is located at the center of the base of its casing (i. ...
military rifle cartridge similar to other early smokeless powder
Finnish smokeless powder
Smokeless powder is a type of propellant used in firearms and artillery that produces less smoke and less fouling when fired compared to black powder. Because of their similar use, both the original black powder formula ...
designs. It was briefly adopted by Norway and Sweden and remained the standard Danish service rifle
A service rifle (or standard-issue rifle) is a rifle a military issues to its regular infantry. In modern militaries, this is generally a versatile, rugged, and reliable assault rifle or battle rifle, suitable for use in nearly all environments ...
cartridge from 1889 until 1945.
Cartridge dimensions
The 8×58mmR Danish Krag has 4.55 ml (70.2grains
A grain is a small, hard, dry fruit ( caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and le ...
H2O) of cartridge case capacity.
8×58mmR Danish Krag cartridge dimensions. All sizes in millimeters (mm). The dimensions of this drawing come from the ammunition manufacturer RWS and differ somewhat between various sources.
Americans define the shoulder angle at alpha/2 ≈ 16.5 degrees. Ø lands = , Ø grooves = .
There are no official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings for this cartridge (2017).
Varying sources quote the 8×58mmR Danish Krag can handle from up to Pmax piezo pressure. This Pmax level range is extreme, so loading up to a high Pmax level can be dangerous in historic arms.
A dangerous error can occur when confusion occurs between the 8×58mmR Danish Krag and the 8×58mmR. The latter being an old German differing chambering.
Military history
The cartridge was developed in Denmark in 1888 by necking-down Danish 11,4x51R Remington Rolling Block cartridge using round-nosed bullets with ofgunpowder
Gunpowder, also commonly known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur, charcoal (which is mostly carbon), and potassium nitrate, potassium ni ...
, and adopted the following year by Denmark in the Krag–Jørgensen
The Krag–Jørgensen is a repeating bolt-action rifle designed by the Norwegians Ole Herman Johannes Krag and Erik Jørgensen in the late 19th century. It was adopted as a standard arm by Norway, Denmark, and the United States. About 300 we ...
M89 rifle. Sweden implemented a major arsenal rebuilding of their M1867 rifles for the 8×58mmR, and Norway experimentally compared 8×58mmR Remington rolling block conversions to the Jarmann M1884
The Jarmann M1884 is a Norwegian bolt-action repeating rifle designed in 1878 adopted in 1884. The Jarmann's adoption, and subsequent modifications, turned the Norwegian Army from a fighting force armed with single-shot black-powder weapons into ...
. Its service in Sweden was very brief, though, since the 6.5×55mm was developed by Sweden and Norway in 1891, formally approved in 1893, and entered service in the Norwegian Krag–Jørgensen rifle in 1894, and in the Swedish Mauser carbine in 1894 and rifle in 1896.Carsten Schinke. ''Die leichten schwedischen Infanteriegewehre Armee und Heimwehr''. Journal-Verlag Schwend GmbH. 1990. Denmark modernized military loading of the 8×58mmR in 1908 using smokeless powder with spitzer bullets; and Danish troops were still armed with the 8×58mmR when Germany invaded in 1940.
Sporting use
Surplus military rifles have been used for hunting; and ammunition was manufactured in Otterup and byNorma Precision
Norma Precision AB, commonly referred to simply as Norma, is a Swedish manufacturer of firearm ammunition based in Åmotfors, Värmland.
History
Norma was started in 1902 by three Norwegian brothers from Nordre Land, Lars Enger (1850-1917) ...
after World War II. Documentation is scarce for the design pressure specifications of these surplus firearms. Although modern weapons may have been designed for smokeless powder loadings, their similarity to arms designed for gunpowder loadings causes uncertainty about the safety of firing modern cartridges in weapons lacking proof test
A proof test is a form of stress test to demonstrate the fitness of a load-bearing or impact-experiencing structure. An individual proof test may apply only to the unit tested, or to its design in general for mass-produced items. Such a struct ...
documentation.
See also
*List of rimmed cartridges
Below is a list of rimmed cartridges (R). Although similar, rimmed cartridges differ from rimfire cartridges (list). A rimmed cartridge is a cartridge with a rim, whose primer is located in the center of the case head; the primer is detonated by ...
* Table of handgun and rifle cartridges
This is a table of selected pistol/submachine gun and rifle/machine gun cartridges by common name. Data values are the highest found for the cartridge, and might not occur in the same load (e.g. the highest muzzle energy might not be in the same ...
References