.38-40 Win. Load Data & Reloading Guide

The .38-40 Winchester, introduced by Winchester in 1874, was initially chambered in the Winchester Model 1873 lever-action rifle. Despite its name, the .38-40 is a .40 caliber cartridge, with the designation reflecting a marketing practice emphasizing powder charge. The cartridge gained popularity due to its versatility for both rifles and revolvers, becoming a favored choice in the late 19th and early 20th centuries.

Technically, the .38-40 Win. features a rimmed, bottleneck case with an overall length of approximately 1.592 inches. The typical bullet diameter for this cartridge is 0.401 inches, fitting snugly with the common bullet weights ranging from 180 to 200 grains. The early black powder loads have been largely supplanted by smokeless powder options, providing more consistent performance. Factory loads generally yield a muzzle velocity around 1,160 to 1,300 feet per second, with an energy output suitable for medium-range applications.

For ballistic performance, the .38-40 Win. provides moderate recoil and effective range up to about 100 yards, making it a solid choice for hunting medium-sized game such as deer and hogs. Its historical use in cowboy action shooting illustrates the cartridge's continued application in both recreational and competitive scenarios. With its manageable recoil and inherent accuracy, it serves modern shooters seeking historical cartridges for sport and collection.

Reloaders benefit significantly from reloading the .38-40 Win. due to the availability of components and its adaptability to various loads. Using modern powders and primers, reloaders can tailor ammunition to specific needs, whether optimizing for accuracy in target shooting or adjusting for different game hunting. Additionally, reloading allows for cost-effective shooting practice, maintaining the classic appeal of this venerable cartridge in contemporary shooting sports.