Reports Concerning Target Practice on Iron Plates, 1862–1864
Record Group 74 Entry 98
Test Plate Number 57: 5 Inch thick plate of English Iron. Guns Used: 11-Inch Dahlgren, 10-Inch Solid Shot Gun, 9-Inch Solid Shot Gun, 150-Pounder firing a 8-Inch Round Shot, 7-Inch Brooke of CSS Atlanta.
Photographed Pages from the National Archives: https://photos.app.goo.gl/shPJqP5ctPBi9Hro7
Analysis: https://www.santee1821.net/ships-forts-and-technology/target-number-57-june-and-july-1864