12.17×42mm RF

The 12.17×42mm rimfire and its slightly longer but still intercchangeable variant, the 12.17×44mm rimfire, are rifle cartridges adopted by the armed forces of Sweden and Norway in 1867 and 1871, respectively. They were primarily chambered in the Remington M1867 rolling block rifle, which became the standard firearm for both countries.

12.17×42mm RF/12.17×44mm RF
12.17×42mm RF (12,17mm patron m/1867) from the collection of Armémuseum, Stockholm
TypeRifle
Place of originUnited 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
12.17×44mm RF - 44 mm
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