Features
Physical Data
5.450 in / 138.43 mm
Cartridge Length
1,784.5 grains / 115.63 grams
Cartridge Weight
662.5 grains / 42.93 grams FMJ (copper) boat tail with hardened steel core and incendiary composition
Bullet
Minimum of 200 lb (90.72 kg)
Bullet Extraction
Gray
Tip Identification
Manufacturer symbol (LC or WMA) and the year of manufacture
Headstamp
Brass (Copper Alloy No. 260)
Cartridge Case Material
50M, Boxer Style
Primer Type
Performance
U.S. Military: • MIL-DTL-3066 • MIL-STD-636 • MIL-STD-1916 • Drawing: 7670238
Manufacture Specifications
2,905 ft/s ± 30 ft/s (78 ft frommuzzle) @ 70 ± 2° F / 885m/s ± 9m/s (24 m frommuzzle) @21 ± 2° C
Muzzle Velocity
Average maximum: 65,000 psi @ 70° F (448 Mpa @ 21° C)
Chamber Pressure
Average mean radii maximum: 12 in @ 600 yds (30.5 cm@ 549 m)
Accuracy
Perforate 7 ⁄ 8 in thick armor plate at 100 yds (2.2 cm thick at 91 m)
Penetration
-65° F to 125° F (-54° C to 52° C)
Operating Range
For use in standard 12.7 x 99 mm chambers only
Note
More Info » winchestermilitary.com
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