Benjamin Franklin Joslyn was known as one of the most interesting gun designers during the
U.S. Civil War, but he was known more for his constant clashes with sub-contractors and the Federal Government than he was for the quality of his arms. His disputes with the government lasted long after the Civil War had ended. In 1855, Joslyn designed a breech-loading carbine. After successful tests, the U.S. Army ordered 50 of these rifles in 1857 in .54 caliber. The Army quickly lost interest in the rifle, but in 1858 the U.S. Navy ordered 500 of these in .58 caliber. Production problems resulted in only 150 to 200 of these rifles being delivered in 1861. After the war ended, the U.S. Government canceled all remaining contracts, claiming that the rifles failed to meet specifications. Litigation related to these contracts persisted for many years after the war ended. In 1871, 6,600 carbines as well as 1,600 rifles that had been converted to use the
.50-70 Government centerfire cartridge were sold to France for use in the
Franco-Prussian War. Many of these were seized by Germany, sold to Belgium and ultimately were converted to shotguns and shipped to Africa. ==Design and features==