Features
Physical Data
5.450 in / 138.43 mm
Cartridge Length
1,777 grains / 115.15 grams
Cartridge Weight
750 grains / 48.6 grams FMJ (copper) boat tail with hardened steel core
Bullet
Minimum of 200 lb (90.72 kg)
Bullet Extraction
Black
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: • OES-DTL-0082 • MIL-STD-636 • MIL-STD-1916 • Drawing: 7402416
Manufacture Specifications
2,800 ft/s average minimum velocity (78 ft frommuzzle) @ 70 ± 2° F / 853 m/s average minimum velocity (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 multiple armor plate arrays: 400 yds (366 m) / 800 yds (732 m) / 1,200 yds (1,097 m)
Penetration
-45° F to 125° F (-43° 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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