.308 Winchester

.308 Winchester
.308 Winchester
Type	Rifle
Place of origin	United States
Production history
Designed	1952
Specifications
Parent case	.300 Savage
Case type	Rimless, bottleneck
Bullet diameter	0.308 in (7.82 mm)
Land diameter	0.300 in (7.62 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 in (51.2 mm)
Overall length	2.800 in (71.1 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/type Velocity Energy 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) 2,619 ft⋅lbf (3,551 J) 175 gr (11 g) BTHP 2,645 ft/s (806 m/s) 2,718 ft⋅lbf (3,685 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]

The .308 Winchester is a smokeless powder rimless bottlenecked rifle cartridge widely used for hunting, target shooting, police, military, and personal protection applications globally. It is similar, but not identical, to the 7.62×51mm NATO cartridge.