Longer, more powerful companion to the .41 Short rimfire. Used in revolvers and single-shot pocket pistols of the post-Civil War era. Largely forgotten today but a fixture of 1860s–1880s American sidearms.
Type: Pistol
Introduced: 1863, United States
Parent case: .41 Short
Standardization: Obsolete / Non-standard
Bullet diameter: 0.406" (10.31 mm)
Case length: 0.875" (22.23 mm)
Overall length: 1.25" (31.75 mm)
Max pressure: 14,000 PSI
Rim type: Rimfire
Primer: Rimfire
Typical twist rate: 1:20
Muzzle velocity: 530–650 fps
Muzzle energy: 100–150 ft-lbs
Effective range: 25 yd
Common bullet weights: 160, 163 gr
Primary use: Self-Defense
Production status: Obsolete
Also known as: .41 Long RF · .41 Long Rimfire
History: Developed concurrently with the .41 Short for slightly larger revolvers capable of handling a longer case. Several manufacturers chambered pocket revolvers in .41 Long during the 1860s–1880s. Never achieved the widespread adoption of .44 Henry or .38 rimfire cartridges, and was rendered obsolete by the transition to centerfire in the 1880s. No current production exists; shooters with original…
Notable firearms: Various pocket revolvers of the 1860s–1880s
Similar cartridges: .41 Short, .44 Henry