Spencer Repeating Rifle - Overview

Overview

The design was completed by Christopher Spencer in 1860, and was for a magazine-fed, lever-operated rifle chambered for the .56-56 Spencer rimfire cartridge. Unlike later cartridge designations, the first number referred to the diameter of the case ahead of the rim, while the second number referred to the diameter at the mouth; the actual bullet diameter was .52 inches. Cartridges were loaded with 45 grains (2.9 g) of black powder.

To use the Spencer, a lever had to be worked to extract the used shell and feed a new cartridge from the tube. Like the Springfield Model 1873 Trapdoor Rifle, the hammer had to be manually cocked in a separate action. The weapon used rimfire cartridges stored in a seven-round tube magazine, enabling the rounds to be fired one after another. When empty, the tube could be rapidly loaded either by dropping in fresh cartridges or from a device called the Blakeslee Cartridge Box, which contained up to thirteen (also six and ten) tubes with seven cartridges each, which could be emptied into the magazine tube in the buttstock.

There were also .56-52, .56-50, and even a few .56-46 versions of the cartridge created, which were necked down versions of the original .56-56. Cartridge length was limited by the action size to about 1.75 inches, and the later calibers used a smaller diameter, lighter bullet and larger powder charge to increase the power and range over the original .56-56 cartridge, which, while about as powerful as the .58 caliber rifled musket of the time, was underpowered by the standards of other early cartridges such as the .50–70 and .45-70.