.56-52 Spencer Rimfire

1860 · Christopher Spencer · 1 firearm in catalog

Also known as: .52 Rimfire, .52 RF, .56-52 Spencer, .52-caliber rimfire

Cartridge specifications

Bullet Diameter13.2 mm (0.520")
Neck Diameter13.5 mm (0.531")
Base Diameter14.2 mm (0.559")
Case Length28.4 mm (1.118")
Overall Length41.9 mm (1.650")
Typical Bullet Weight22.7 g (350 gr)
Typical Muzzle Velocity365 m/s (1198 fps)
Typical Muzzle Energy1512 J (1115 ft·lbf)
Primer TypeRimfire
Cartridge TypeRimmed
Introduced1860

Firearms chambered in .56-52 Spencer Rimfire