Pinfire cartridge

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The pin-fire (or pinfire) is a type of metallic cartridge used in firearms, where the priming compound is ignited by striking a small pin that protrudes radially from above the base of the cartridge. Invented by Frenchman Casimir Lefaucheux in 1832,^[1] but not patented until 1835,^[2] it was one of the earliest practical designs of a metallic cartridge to hasten the loading and firing process of a firearm. Its history is closely associated with the development of the breechloader, which would eventually replace all muzzle-loading firearms.

The cartridge featured a small pin that, when struck, would ignite the priming compound and initiate the firing process. Despite initial resistance, especially from British gun users, the pinfire cartridge gained popularity following the Great Exhibition of 1851. Its advantages included easier and faster loading than percussion weapons, and it was more likely to fire reliably when wet. However, with the introduction of reliable rimfire and centerfire cartridges, which were quicker to load and safer, the pinfire cartridge became obsolete. Today, enthusiasts of vintage weaponry often create pinfire cartridges from modern materials for use in antique firearms.