Features
Physical Data
2.260 in / 57.4 mm
Cartridge Length
183 grains / 14 grams
Cartridge Weight
55.6 grains / 3.63 grams FMJ (copper alloy clad steel) with copper core, trace composition and igniter composition
Bullet
45 lb (20 kg)
Bullet Extraction
Orange
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-32395 • MIL-STD-636 • MIL-STD-1916 • Drawing: 13029994
Manufacture Specifications
3,100 +/- 40 ft/s (78ft frommuzzle) @ 70 +/- 2 F / 945 +/- 12 m/s (24m frommuzzle) @ 21 +/- 2 C
Muzzle Velocity
Average maximum: 58,700 psi @ 70° F (405 Mpa @ 21° C)
Chamber Pressure
Average horizontal and vertical standard deviation maximum: 10.3 in @ 600 yds (26.2 cm@ 549m)
Accuracy
Dim at 14 yds (13m) and Visible trace 77 yds to 984 yds (70m to 900m)
Trace Performance
-65 F to 125 F (-54 C to 52 C)
Operating Range
For use in standard 5.56 x 45 mm chambers only
Notes
More Info » winchestermilitary.com
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