The 8-Inch Rifles at the University of Maine
Two US Navy 8-Inch (180-Pounder) Muzzle Loading Rifles have been displayed at the University of Maine in Orono since Llewellyn N. Edwards, Class of 1898, facilitated their donation by the Navy in 1932. The cannons, originally cast as 11-Inch Dahlgrens, would serve aboard US Navy ships including USS Pensacola, USS Juniata, and USS Galena in the 1870s and 1880s.
The Manufacture of US Navy 8-Inch Muzzle Loading Rifles from 11-Inch Dahlgren Shell Guns
An excerpt from Augustus Paul Cooke's A Text Book of Naval Ordnance and Gunnery Prepared for the Use of Cadet Midshipmen of the United States Naval Academy describes the manufacture of 8-Inch Muzzle Loading Rifles from existing 11-Inch Dahlgren Smoothbore Shell Guns. The post includes cutaway illustrations from the book and photographs from preserved Dahlgren cannons.