Posted on March 21, 2020March 22, 2020 by Erik Chipchase 12-pounder gun on improvised mount used by the British during the Second Anglo-Boer War.QF 12-pounder 12-cwt gun(abbreviated as Q.F. 12-pdr. was a 3-inch (76.2 mm) caliber naval gun introduced in 1894 and used until the middle of the 20th century.