Transition-era British dangerous game cartridge. "BN" (Nitro-for-Black) designates a cartridge originally loaded with black powder, later proofed for early nitro powder. 3 inch case. Used in double rifles.
Type: Rifle
Introduced: 1890, United Kingdom
Parent case: None
Standardization: Obsolete / Non-standard
Bullet diameter: 0.366" (9.3 mm)
Max pressure: 18,000 PSI
Rim type: Rimmed
Primer: Large Rifle
Typical twist rate: 1:12
Muzzle velocity: 1400–1600 fps
Muzzle energy: 1090–1706 ft-lbs
Effective range: 300 yd
Common bullet weights: 250, 300 gr
Primary use: hunting
Production status: Obsolete
Also known as: .360 No.2 NE 3 inch · .360 No.2 BN · 360 No.2 Nitro for Black
History: A British Nitro Express cartridge in .360 caliber, one of numerous British proprietary double-rifle cartridges developed for African hunting in the early 20th century. The BN designation indicates black powder nitro configuration. Rarely encountered except in original double rifles of the era.