Jarmann harpoon rifle

In addition, a heavy rubber shoulderpad was added to reduce the considerable recoil. The rifle could still fire the ordinary 10.15 x 61R cartridge after the conversion. A box could be mounted under the handguard containing up to 300 m of thin rope. Kongsberg manufactured the M28 harpoon gun until 1952, when they started using the Mauser 98 mechanism in a new harpoon gun called the M52. The sources indicate that around 1,911 Jarmann rifles were modified to M28s, about half of them after World War II. The M28 was advertised as being suitable for use for hunting and rescue work, as well as for general shooting of lines. The advertisement reproduced here specifically mentions its suitability for firefighters, people erecting telephone lines and general construction work. The M28 was seen as suitable for hunting Atlantic bluefin tuna, seals, swordfish and other large marine animals. Among the equipment that could be delivered for the M28 were hunting harpoons, rescue harpoons, rocket-assisted harpoons, 'dum-dum bullets' and rope of various lengths in special crates. The special rounds for launching harpoons were manufactured until the mid-1970s.

• Is Ranged — yes • Name — Jarmann M28 harpoon gun • Origin — Norway • Type — bolt action harpoon gun • Designer — Jacob Smith Jarmann • Design Date — 1928 • Service — 1928 onwards • Cartridge — 10.15 x 61R rimmed • Action — Bolt action • Rate — Unknown, but as fast as the operator could reload • Velocity — Unknown • Range — 300 m • Weight — 5.3 kg empty, 7.7 kg with harpoon • Length — 1.06 m • Part Length — Unknown • Feed — 1 • Sights — V-notch and front post • Variants — M28 • Number — 1,911 • Illustration — A 1930 advertisement for the M28