.42 Cup-Fire

1863 · Willard C. Ellis · 1 firearm in catalog

Also known as: .42 Cupfire, .42 Cup-Primed, Plant's .42

Cartridge specifications

Bullet Diameter10.7 mm (0.421")
Base Diameter11 mm (0.433")
Case Length17 mm (0.669")
Overall Length26 mm (1.024")
Typical Bullet Weight13 g (201 gr)
Typical Muzzle Velocity180 m/s (591 fps)
Typical Muzzle Energy210 J (155 ft·lbf)
Primer TypeCup Primed
Cartridge TypeRimless
Introduced1863

Firearms chambered in .42 Cup-Fire