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 Cartridge 308

.308 Winchester
.308 Winchester FMJSP.jpg
308 Winchester
Type Rifle
Place of origin United States
history
Designed 1952
Specifications
Parent case .300 Savage
Case type Rimless, Bottleneck
Bullet diameter 0.308 in (7.8 mm)
Neck diameter 0.3433 in (8.72 mm)
Shoulder diameter 0.4539 in (11.53 mm)
Base diameter 0.4709 in (11.96 mm)
Rim diameter 0.4728 in (12.01 mm)
Rim thickness 0.0539 in (1.37 mm)
Case length 2.015 (51.18 mm)
Overall length 2.800 (71.12 mm)
Case capacity 56 gr H2O (3.6 cm3)
Primer type Large rifle
Maximum pressure (C.I.P.) 60,191 psi (415.00 MPa)
Maximum pressure (SAAMI) 62,000 psi (430 MPa)
Ballistic performance
Bullet mass/typeVelocityEnergy
125 gr (8 g) Spitzer 3,100 ft/s (940 m/s) 2,668 ft·lbf (3,617 J)
150 gr (10 g) Nosler tip 2,820 ft/s (860 m/s) 2,648 ft·lbf (3,590 J)
168 gr (11 g) BTHP 2,650 ft/s (810 m/s) 2,700 ft·lbf (3,700 J)
175 gr (11 g) BTHP 2,645 ft/s (806 m/s) 2,619 ft·lbf (3,551 J)
185 gr (12 g) Lapua Mega JSP 2,510 ft/s (770 m/s) 2,588 ft·lbf (3,509 J)

Test barrel length: 24 in (26 in for Lapua) [1]

 

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