.45 ACP

1905 · John Browning · 798 firearms in catalog

Also known as: .45 Auto, 45 ACP, 11.43x23mm

Cartridge specifications

Bullet Diameter11.43 mm (0.450")
Neck Diameter12.09 mm (0.476")
Base Diameter12.19 mm (0.480")
Case Length22.81 mm (0.898")
Overall Length32.39 mm (1.275")
Max Pressure131 MPa (21,000 psi)
Typical Bullet Weight14.9 g (230 gr)
Typical Muzzle Velocity260 m/s (853 fps)
Typical Muzzle Energy477 J (352 ft·lbf)
Primer TypeLarge Pistol
Cartridge TypeRimless
Introduced1905

Firearms chambered in .45 ACP

Cartridge family

Derived cartridges