Features
Physical Data
5.450 in / 138.43 mm
Cartridge Length
1,718 grains / 111.32 grams
Cartridge Weight
618 grains / 40.1 grams FMJ (copper) boat tail with mild steel core and tracer mix
Bullet
Minimum of 200 lb (90.72 kg)
Bullet Extraction
Brown
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-1318 • MIL-STD-636 • MIL-STD-1916 • Drawing: 7672165
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
Averagemean radii maximum: 6.25 in@200yds (15.9cm@183m) / 12 in@600yds (30.48cm @549m)
Accuracy
Visible trace 100 yds to 1,600 yds (91 m to 1,463 m)
Trace Performance
-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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