The .308 Winchester has 3.64 ml (56.0 grains) cartridge case capacity.
The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt action rifles and machine guns alike, under extreme conditions.

.308 Winchester maximum C.I.P. cartridge dimensions.
All dimensions in millimeters (mm) and inches.

Americans would define the shoulder angle at alpha/2 = 20 degrees.
The common rifling twist rate for this cartridge is 305 mm (1 in 12 in), 4 grooves, Ø lands = 7.62 mm, Ø grooves = 7.82 mm, land width = 4.47 mm and the primer type is large rifle.

According to the official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings the .308 Winchester can handle up to 415.00 MPa (60,191 psi) Pₘₐₓ piezo pressure.
In C.I.P. regulated countries every rifle cartridge combo has to be proofed at 125% of this maximum C.I.P. pressure to certify for sale to consumers.
This means that .308 Winchester chambered arms in C.I.P. regulated countries are currently (2008) proof tested at 519.00 MPa (75,275 psi) PE piezo pressure.

North American SAAMI maximum pressure for the 308 Winchester is 427.47 MPa (62,000 psi).
The .308 Winchester has 3.64 ml (56.0 grains) cartridge case capacity. The exterior shape of the case was designed to promote reliable case feeding and extraction in bolt action rifles and machine guns alike, under extreme conditions.
.308 Winchester maximum C.I.P. cartridge dimensions. All dimensions in millimeters (mm) and inches.
Americans would define the shoulder angle at alpha/2 = 20 degrees. The common rifling twist rate for this cartridge is 305 mm (1 in 12 in), 4 grooves, Ø lands = 7.62 mm, Ø grooves = 7.82 mm, land width = 4.47 mm and the primer type is large rifle.
According to the official C.I.P. (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) rulings the .308 Winchester can handle up to 415.00 MPa (60,191 psi) Pₘₐₓ piezo pressure. In C.I.P. regulated countries every rifle cartridge combo has to be proofed at 125% of this maximum C.I.P. pressure to certify for sale to consumers. This means that .308 Winchester chambered arms in C.I.P. regulated countries are currently (2008) proof tested at 519.00 MPa (75,275 psi) PE piezo pressure.
North American SAAMI maximum pressure for the 308 Winchester is 427.47 MPa (62,000 psi).
.308 Winchester