Various shell weights, both heavier and lighter than 45 pounds (20.4 kg), were tried. Early Mk I–IV Common Lyddite shells weighed 46 pounds 9 ounces (21.1 kg). Subsequent Mks V, VI, VII beginning October 1909, weighed 45 pounds (20.4 kg). Brassey's Naval Annual of 1894Archived 7 June 2011 at the Wayback Machine quotes a 45-pound projectile, based on "List of Service Ordnance 1891, corrected by Official Card List 1892". Text Book of Gunnery 1902 only gives figures for 45 pounds (20.4 kg) projectiles. All shells used in the First World War are believed to be 45 pounds (20.4 kg). Sources: Hogg & Thurston 1972, Page 242; Treatise on Ammunition 10th Edition 1915, pages 45, 165, 170, 188, 217.
Various shell weights, both heavier and lighter than 45 pounds (20.4 kg), were tried. Early Mk I–IV Common Lyddite shells weighed 46 pounds 9 ounces (21.1 kg). Subsequent Mks V, VI, VII beginning October 1909, weighed 45 pounds (20.4 kg). Brassey's Naval Annual of 1894Archived 7 June 2011 at the Wayback Machine quotes a 45-pound projectile, based on "List of Service Ordnance 1891, corrected by Official Card List 1892". Text Book of Gunnery 1902 only gives figures for 45 pounds (20.4 kg) projectiles. All shells used in the First World War are believed to be 45 pounds (20.4 kg). Sources: Hogg & Thurston 1972, Page 242; Treatise on Ammunition 10th Edition 1915, pages 45, 165, 170, 188, 217.