12.17×42mm RF

Source: Wikipedia, the free encyclopedia.
12.17×42mm RF/12.17×44mm RF
United Kingdoms of Sweden and Norway
Service history
Used bySweden
Norway
Specifications
Bullet diameter.497 inches\12.615 mm
Neck diameter12.17×42mm RF - 13.44 mm
12.17×44mm RF - 13.46 mm
Base diameter12.17×42mm RF - 13.93 mm
12.17×44mm RF - 14.00 mm
Rim diameter12.17×42mm RF - 15.94 mm
12.17×44mm RF - 16.00 mm
Rim thickness12.17×42mm RF - 1.68 mm
12.17×44mm RF - 2.08 mm
Case length12.17×42mm RF - 41.2 mm[1]
12.17×44mm RF - 44 mm[2]
Overall length12.17×42mm RF - 51.78 mm
12.17×44mm RF - 57.38 mm
Primer typeRimfire
FillingBlack Powder
Filling weightIn Service; 3.89 or 4.09 Grams

12.17×42mm RF and its subvariety the 12.17×44mm RF

breech-loading Model 1864 and Norwegian breech-loading Kammerlader
rifles of various models were also converted to rolling block rifles, chambered for the new standard round.

A lengthened version of the round, the 12.17×44mm RF, was adopted by the Norwegian armed forces in 1871. But the two cartridges were interchangeable, and could thus be fired from the same weapons.

The cartridge, nominally known as 4 Linjers (actual bore diameter 4.1 Swedish decimal lines or 3.88 Norwegian decimal lines, that is 0.41 Swedish or 0.388 Norwegian inches), had a lead bullet 12.615mm (0.497 in) in diameter, with the diameter of the bore, measured between the lands, being 12.17mm (0.479 inches). It used a copper case.

In Swedish service, the standard cartridge used a lead projectile (shaped like a Minié ball) weighing 24 g (370 gr). The muzzle velocity fired through a 955mm (37.6 in) rifle barrel was 386 m/s (1,266 ft/s), with a muzzle energy of 1,788 J (1,319 ft/lbf).[3] Fired through a 460mm (18.11 in) carbine barrel the muzzle velocity was 340 m/s (1,115 ft/s), with a muzzle energy of 1,387 J (1,023 ft/lbf).[4]

In Norwegian service, the standard cartridge used a cast lead projectile weighing 5.85 kvintin (22.8 g/352 gr) and 1 kvintin (3.89 g/60 gr) of gunpowder. Later rounds had a pressed lead projectile weighing 6 kvintin (23.4 g/361 gr) and the gunpowder load was increased to 1.05 kvintin (4.09 g/63 gr).

There was also a blank round - an ordinary cartridge case loaded with 54 gr (3.50 g) of gunpowder and sealed off with a piece of cardboard or a cork disc.

12.17×44mmR centerfire

A civilian/paramilitary

Volunteer Force and training civilians in the use of arms, with the units raised intended as local defense units (the first such volunteer "sharpshooter" units were raised in Stockholm in 1860, with the total number of active members throughout Sweden reaching 40,000 in 1865;[6]
volunteer "sharpshooter" units were armed with military M1867 rifles modified to use the 12.17×44mmR centerfire cartridge, and wore military-style uniforms).

Alternative names

The 12.17×42mm RF is also known as "12,17mm patron m/1867" and "12×42RF Swedish Remington Model 1867".[1]
The 12.17×44mm RF is also known as "12×44RF Norwegian Remington Model 1871" and "12.7×44RF Norwegian".[2]
The 12.17×44mm R is also known as "12×44R Swedish Remington", ".50 Swedish/Norwegian Remington" and "12.7×44R".[5]

Today

Many Remington Rolling Blocks were converted to use the centerfire 12.17×44mmR cartridge or rebuilt to

black-powder enthusiasts both for competition and hunting. Centerfire 12.17×44mmR cases are available, but a more cost-effective way to acquire cases is to cut .50 Alaskan cases down to 44mm (1.732 in) total length.[7]

See also

References

  1. ^ a b "12 x 42 RF Swedish Remington 1867 / MUNICION.ORG". Archived from the original on 2012-04-26. Retrieved 2011-12-14.
  2. ^ a b "12x44 RF Remington Noruego / MUNICION.ORG". Archived from the original on 2018-10-05. Retrieved 2019-01-13.
  3. ^ "Gevär m/1867-74". digitaltmuseum.se. Retrieved 2020-10-22.
  4. ^ "Karbin m/1870". digitaltmuseum.se. Retrieved 2020-10-22.
  5. ^ a b "12x44 R Rem Sueco / MUNICION.ORG". Archived from the original on 2012-04-26. Retrieved 2011-12-17.
  6. ^ "421-422 (Nordisk familjebok / 1800-talsutgåvan. 5. Folkvisor - Grimnesmål)". runeberg.org (in Swedish). 1882. Retrieved 2020-10-22.
  7. ISBN 978-1847975935

Further reading
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