Spanish military cartridge for Remington Rolling Block rifles. The "Reformado" designation refers to a modernized reformulation of the standard .43 Spanish service round.
Type: Rifle
Introduced: 1871, Spain
Parent case: None
Standardization: Obsolete / Non-standard
Bullet diameter: 0.439" (11.15 mm)
Max pressure: 18,000 PSI
Rim type: Rimmed
Primer: Berdan Large Rifle
Typical twist rate: 1:20
Muzzle velocity: 1300–1500 fps
Muzzle energy: 1389–1998 ft-lbs
Effective range: 200 yd
Common bullet weights: 370, 400 gr
Primary use: military
Production status: Obsolete
Also known as: 43 Spanish Reformado · .43 Remington Spanish · .43 Spanish
History: Spain adopted the Remington Rolling Block rifle in 1867, chambered for this black powder cartridge. After military modernization with the Mauser system in 1893, the cartridge was adapted (Reformado) by altering existing rifles for a modified round. Used in Spanish colonial conflicts through the late 19th century.