.270 Winchester

1925 · Winchester · 96 firearms in catalog

Also known as: 270 Win, .270 Win

Cartridge specifications

Bullet Diameter7.04 mm (0.277")
Neck Diameter7.83 mm (0.308")
Base Diameter11.96 mm (0.471")
Case Length64.52 mm (2.540")
Overall Length84.84 mm (3.340")
Max Pressure414 MPa (65,000 psi)
Typical Bullet Weight8.42 g (130 gr)
Typical Muzzle Velocity960 m/s (3150 fps)
Typical Muzzle Energy3877 J (2860 ft·lbf)
Primer TypeLarge Rifle
Cartridge TypeRimless
Introduced1925

Firearms chambered in .270 Winchester