Features
Physical Data
5.450 in / 138.43 mm
Cartridge Length
1,765 grains / 114.37 grams
Cartridge Weight
671 grains /43.5gramsFMJ (copper) boat tail withhardenedsteel core, incendiaryandenergetic composition
Bullet
Minimum of 200 lb (90.72 kg)
Bullet Extraction
Green /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: • WS25470 • MIL-STD-636 • MIL-STD-1916 • Drawing: 6086059
Manufacture Specifications
2,905 ft/s ± 50 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
Core completely penetrates target at 110 yds (101 m)
Penetration
Maximum Ignition 24 in behind target plate @ 190 yds (60.96 cm@ 174 m)
Flash
Minimum of 8 fragments @ 190 yds (174 m)
Fragmentation
-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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