12.7x108mm Ammo
12.7x108mm Ammo For Sale From Various Ammo Vendors
The 12.7×108mm cartridge is a 12.7 mm heavy machine gun and anti-materiel rifle cartridge used by the former Soviet Union, the former Warsaw Pact, modern Russia, China, and other countries.
It is used in the same roles as the NATO .50 B.M.G. (12.7×99mm NATO) cartridge. The two differ in bullet shape and weight, and the casing of the 12.7×108mm is slightly longer, and its larger case capacity allows it to hold slightly more of a different type of powder.
According to guidelines, the 12.7×108mm case can handle up to 360 MPa (52,213 psi) piezo pressure. In C.I.P. regulated countries, every rifle cartridge combo has to be proofed at 125% of this maximum C.I.P. pressure to certify for sale to consumers.
About: 12.7x108mm
- Type: Heavy machine gun Anti-material rifle
- Place of origin: USSR
- In-service: 1935–present
- Used by: Soviet Union and successor states
Specifications
- Bullet diameter: 12.98 mm (0.511 in)
- Neck diameter: 13.95 mm (0.549 in)
- Shoulder diameter: 18.90 mm (0.744 in)
- Base diameter: 21.75 mm (0.856 in)
- Rim diameter: 21.70 mm (0.854 in)
- Rim thickness: 1.90 mm (0.075 in)
- Case length: 108 mm (4.3 in)
- Overall length: 147.50 mm (5.807 in)
- Case capacity: 22.72 cm3 (350.6 gr H2O)
- Maximum pressure: 360 MPa (52,000 psi)
Ballistic performance
| Bullet mass/type | Velocity | Energy |
|---|---|---|
| 48.3 g (745 gr) API | 820–860 m/s 16,240–17,861 | J |
| B32 57-BZ-542 (2,700–2,800 ft/s) | (11,978–13,174 ft⋅lbf) | |
| 55.4 g (855 gr)API-HC BS | 820 m/s (2,700 ft/s) 18,625 | J (13,737 ft⋅lbf) |
| 56.6 g (873 gr) | 820–825 m/s 19,029–19,621 | j |
| API-HC BS 7-BZ-1 (2,690–2,710 ft/s) | (14,035–14,472 ft⋅lbf) | |
| 59.2 g (914 gr) 770–785 | m/s 17,549–18,240 | j |
| Sniper SN 7N34 (2,530–2,580 ft/s) | (12,943–13,453 ft⋅lbf) | |
| 44.1 g (681 gr) 916–923 m/s | 18,501–18,785 | j |
| Tulammo 680gr hunting cartridge | (3,010–3,030 ft/s | (13,646–13,855 ft⋅lbf) |
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