Editing .30-06 Springfield (section)

==Cartridge dimensions==
[[File:Cartridge 30-06.png|thumb|300 px|.30-06 Springfield cartridge dimensions. All sizes in inches]]

The .30-06 Springfield cartridge case can hold 68.2 grains and has a volume of {{convert|4.42|ml|in3}}. The exterior shape of the case was designed to promote reliable case feeding and extraction in [[bolt-action]] rifles and [[machine gun]]s alike, under extreme conditions.{{Citation needed|date=January 2021}}

[[File:.30-06 Springfield.svg|400px]]

'''.30-06 Springfield maximum C.I.P. cartridge dimensions.''' All sizes in millimeters.<ref>{{Cite web |url=http://www.cip-bobp.org/homologation/uploads/tdcc/tab-i/tabical-en-page111.pdf |title=C.I.P. TDCC datasheet .30-06 Spring.}}</ref>

Americans define the shoulder angle at alpha/2 = 17.5 degrees. According to the ''[[Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives]]'' (C.I.P.) the common [[rifling]] [[twist rate]] for this cartridge is 254&nbsp;mm (1 in 10 in), 4 grooves, Ø lands = 7.62&nbsp;mm (.30 in), Ø grooves = 7.82&nbsp;mm (.308 in), land width = 4.49&nbsp;mm (.1768 in) and the [[Percussion cap|primer type]] is large rifle.{{Citation needed|date=January 2021}}

According to the official C.I.P. guidelines, the .30-06 Springfield case can handle up to 405 MPa (58,740 psi) piezo pressure. In C.I.P.-regulated countries, every rifle cartridge combination has to be [[Proof (firearms)|proofed]] at 125% of this maximum C.I.P. pressure to certify for sale to consumers. The [[8×64mm S]] is the closest European ballistic twin of the .30-06 Springfield.{{Citation needed|date=January 2021}}