.38-40 Winchester

1874 · Winchester Repeating Arms Company · 2 firearms in catalog

Also known as: .38 WCF, .38-40 Win, 10x33mmR

Cartridge specifications

Bullet Diameter10.16 mm (0.400")
Neck Diameter10.54 mm (0.415")
Base Diameter11.86 mm (0.467")
Case Length33.02 mm (1.300")
Overall Length40.39 mm (1.590")
Max Pressure96.5 MPa (14,000 psi)
Typical Bullet Weight11.66 g (180 gr)
Typical Muzzle Velocity381 m/s (1250 fps)
Typical Muzzle Energy846 J (624 ft·lbf)
Primer TypeLarge Pistol
Cartridge TypeRimmed
Introduced1874

Firearms chambered in .38-40 Winchester

Cartridge family

Parent cartridge: .44-40 Winchester