Features
Physical Data
2.260 in / 57.4 mm
Cartridge Length
190 grains / 12.31 grams
Cartridge Weight
62 grains / 4 grams FMJ (copper) boat tail with steel penetrator and lead core
Bullet
Minimum of: 45 lb (20 kg)
Bullet Extraction
Green
TIP Identification
Manufacturer symbol (LC or WMA) and the year of manufacture
Headstamp
Brass (Copper Alloy No. 260)
Cartridge Case Material
No. 41, Boxer Style
Primer Type
Performance
U.S. Military: • MIL-DTL-63989 • MIL-STD-636 • MIL-STD-1916 • Drawing: 9342868
Manufacture Specifications
3,020 ft/s ± 40 ft/s (78 ft frommuzzle) @70 ± 2° F / 920m/s ± 12m/s (24m frommuzzle) @21 ± 2° C
Muzzle Velocity
Average maximum: 58,700 psi @ 70° F (405 Mpa @ 21° C)
Chamber Pressure
1.8 in @ 200 yds (4.6 cm@ 183 m) / 6.8 in @ 600 yds (17.3 cm@ 549 m)
Accuracy
-65° F to 125° F (-54° C to 52° C)
Operating Range
For use in standard 5.56 x 45 mm chambers only
Note
More Info » winchestermilitary.com
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