Original cartridge for the Winchester Model 1876 — the first Winchester large-bore repeating rifle capable of handling true big-game cartridges. Used by Theodore Roosevelt, the Northwest Mounted Police, and various frontier figures.
Type: Rifle
Introduced: 1876, United States
Parent case: .45-70 Government
Standardization: None
Bullet diameter: 0.454" (11.53 mm)
Case length: 1.892" (48.06 mm)
Max pressure: 18,000 PSI
Rim type: Rimmed
Primer: Large Rifle
Typical twist rate: 1:20
Muzzle velocity: 1380–1480 fps
Muzzle energy: 1480–1701 ft-lbs
Effective range: 175 yd
Common bullet weights: 350 gr
Primary use: Hunting, Military
Production status: Discontinued
Also known as: .45-75 WCF
History: Developed in 1876 for the Winchester Centennial rifle (Model 1876), Winchester's answer to demands for a large-bore repeating rifle. It was one of Theodore Roosevelt's preferred cartridges during his ranching days. The Northwest Mounted Police adopted the Model 1876 in .45-75. Factory ammunition was discontinued in the early 20th century; reproduction cartridges are available from specialty…
Notable firearms: Winchester Model 1876, Uberti Model 1876 replica
Military use: United States (cavalry, limited)
Similar cartridges: .45-70 Government, .45-90 Sharps