Grapevine carbine, Cosmopolitan carbine, Gwyn and Campbell carbine, Union carbine. Many names, three inventors, one maker. This is the detailed presentation of one of the most underrated percussion breech loading cavalry carbines of the American Civil War. History, development, impact, cartridges and a lot of accuracy and mad minute range tests for the Union carbine. Take your time, lay back, enjoy! Please support us at https://www.patreon.com/capandball For buying Capandball Civil War cartridge boxes, cartridge formers, powder measure sets, flintlock tools, printing plates for arsenal labels and US arsenal Stadias: http://stores.ebay.com/Capandball?_trksid=p2047675.l2563 or the Capandball webpage: https://capandball.com/termekkategoria/capandball-products-2/ Magyar szöveg: https://kapszli.hu/a-polgarhaborus-union-karabely/