Data Quality84%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the bolt-action rifles category.
01 / Overview
Jarmann harpoon rifle
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
BOLT-ACTION RIFLES · INTERWAR PERIOD
21
PERFORMANCE/PRICE
75
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the bolt-action rifles category, regardless of era.
02 / Specs & Design
◎General5MOD.5
- Service Entry Year1928
- DesignerJacob Smith Jarmann
- Weight (Empty)5.3 kg
- Weight (Loaded)7.7 kg
- Currently In ServiceYes
◈Cartridge & Calibre5MOD.5
- Cartridge10.15 x 61R rimmed
- Calibre10.15 mm
- Case Length61 mm
- Calibre Classrimmed
- RimfireNo
▣Operation4MOD.4
- Action TypeBolt Action
- Fire Modessingle-shot
- Feed SystemSingle Shot
- Magazine Capacity0
◇Ballistics1MOD.1
- Effective Range (point)300 m
◆Barrel & Sights2MOD.2
- Sight TypeV-notch and front post
- Iron SightsYes
▤Production & Cost4MOD.4
- Total Production1,911
- Production Start1928
- Production End1952
- Variants28
03 / History
SERVICE LIFESPANRetired
- 1928Production started
- 1952Production ended
98
years in service
24
years in production
1,911
units produced
0
countries operating
ⓘ 1 countries retired it.
04 / Variants
▚ WEAPON FAMILY
Jarmann harpoon rifle 
06 / MASS Score
BOLT-ACTION RIFLES RANKING Bolt-Action Rifles · Interwar Period
MASS RANKINGSMASS ↗
184BOLT-ACTION RIFLES21INTERWAR PERIOD · BOLT-ACTION RIFLES24NORWAY · ALL WEAPONS233PERFORMANCE/PRICE · BOLT-ACTION RIFLES
ⓘ Rankings are within theBolt-Action Riflescategory.
📖 TERMS ON THIS PAGE3terms
A bolt action is a type of firearm action that requires the user to manually cycle the bolt to load and eject cartridges. It is uncommon in pistols.
Adjustable metal aiming devices on firearms, consisting of a front post and rear notch, used without magnification.
A firearm feed system where only one round is chambered and fired per cycle, requiring manual reloading.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources