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The 10.7×58mmR cartridge used in the Berdan was also invented by Hiram Berdan, with the assistance of Russian colonel Alexander Gorlov . It was the subject of many patents in both the United States and United Kingdom. The bottleneck cartridge case used the Berdan primer, its first use in a small arms cartridge.
Berdan and Boxer primers are used in centerfire cartridges; the primers differ in construction. Various priming mixtures have been used in different sized primers to effect prompt ignition of the powder charge. Particles with relatively high heat capacity are required to promptly ignite smokeless powder deterrent coatings. Some priming ...
This page was last edited on 17 May 2015, at 00:03 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
Most surplus ammunition is steel-cased and uses Berdan primers, which effectively hinders its use for handloading. However, with the increased popularity of surplus Eastern-bloc Mosin–Nagant, SVT-40, and PSL rifles in the United States, Boxer-primed ammunition and unfired cases are increasingly available; these cases take large rifle primers.
The "Tround" ("Triangular Round") was a unique type of cartridge designed in 1958 by David Dardick, for use in specially designed Dardick 1100 and Dardick 1500 open-chamber firearms. As their name suggests, Trounds were triangular in cross-section and were made of plastic or aluminum, with the cartridge completely encasing the powder and ...
Hiram Berdan (September 6, 1824 – March 31, 1893) was an American engineer, inventor, military officer, marksman, and guiding force behind and commanding colonel of the United States Volunteer Sharpshooter Regiments during the American Civil War. He was the inventor of the Berdan rifle, the Berdan centerfire primer and other weapons and ...
Berdan primers have remained essentially the same functionally to the present day. Berdan primers are similar to the caps used in the caplock system, being small metal cups with pressure-sensitive explosive in them. Modern Berdan primers are pressed into the "primer pocket" of a Berdan-type cartridge case, where they fit slightly below flush ...
Unlike the USGI ammo, which has non-corrosive Boxer primers, it has corrosive Berdan primers. The cases have longitudinal scratches along the sides, like they have been reloaded. The bullet has a black sealant at its base and the primer has a clear pinkish-red sealant rather than an opaque red sealant. They come packed in 50-round cartons.