US Army service revolver cartridge from 1892 to 1911, chambered in the Colt Army Model 1892 double-action revolver. Note: distinct from the heeled-bullet .41 Long already in the database — this is the later inside-lubricated smokeless variant.
Type: Revolver
Introduced: 1877, United States
Parent case: None
Standardization: SAAMI
Bullet diameter: 0.401" (10.19 mm)
Case length: 1.13" (28.7 mm)
Max pressure: 18,000 PSI
Rim type: Rimmed
Primer: Large Pistol
Typical twist rate: 1:20
Muzzle velocity: 730–785 fps
Muzzle energy: 237–274 ft-lbs
Effective range: 35 yd
Common bullet weights: 200 gr
Primary use: Military, Self Defense
Production status: Discontinued
Also known as: .41 LC · 10.4x28mmR (smokeless) · .41 Colt
History: Adopted by the US Army in 1892 for the new double-action Colt Army revolver, replacing the .45 Colt SAA in service. The .41 Long Colt was considered inadequate almost immediately — it lacked the stopping power of the .45 Colt, and service experience in the Philippines confirmed this. The Army's experience with cartridge inadequacy led directly to the .45 ACP and M1911 development. Factory…
Notable firearms: Colt Army Model 1892, Colt New Army & Navy Revolver
Military use: United States (Army, 1892–1911)
Similar cartridges: .38 Long Colt, .44-40 Winchester