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Springfield Model 1866 breech. The Springfield Model 1866 was the second iteration of the Allin-designed trapdoor breech-loading mechanism. Originally developed as a means of converting rifle muskets to breechloaders, the Allin modification ultimately became the basis for the definitive Springfield Model 1873, the first breech-loading rifle adopted by the United States War Department for ...
Springfield Model 1866, trapdoor breech closed. In 1872–1873 a military board, headed by Brigadier-General Alfred H. Terry, conducted an examination and trial of 99 rifles from several domestic and foreign manufacturers, including those from Springfield, Sharps, Peabody, Whitney, Spencer, Remington, and Winchester pursuant to the selection of a breech-loading system for rifles and carbines ...
Meanwhile, the Army, which had exited the Civil War with an inventory of almost a million percussion-fired muzzleloaders, converted Springfield Model 1863 and Model 1864 muskets to metallic cartridge ammunition using the Allin conversion (trapdoor) method, as well as cadet rifles. The first of the .50-70 conversions was the Springfield Model 1866.
The Springfield Model 1873 was the first standard-issue breech-loading rifle adopted by the United States Army (although the Springfield Model 1866 had seen limited issue to troops along the Bozeman Trail in 1867). The rifle, in both full-length and carbine versions, was widely used in subsequent battles against Native Americans.
This caused the Model 1865 to be called the "First Allin", and the following revised model, the Model 1866, to be called the "Second Allin". The Model 1865 fired a rimfire .58-60-500 cartridge (.58 inch 500-grain (32 g) bullet, 60 grains (3.9 g) of black powder), the caliber matching that of the Civil War Minié ball , which was originally used ...
Springfield Model 1865 – .58-60 caliber trapdoor rifle. [4] Springfield Model 1866 – .50-70 caliber trapdoor rifle. [5] Springfield Model 1868 – .50-70 caliber trapdoor rifle. [6] Springfield Model 1869 – .50-70 caliber trapdoor cadet rifle. [7] Springfield Model 1870 – .50-70 caliber trapdoor rifle. [8] Springfield Model 1870 ...
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The Model 1868 was also the first trapdoor conversion to use the cartridge extractor covered by U.S. Patent No. 68,009, issued August 27, 1867 to W.H. & G.W. Miller. The Model 1868 had an overall length of 51 7 ⁄ 8 inches. [1] Over 50,000 Model 1868 rifles were manufactured, chambered for the .50-70 450 cartridge.