Navy Proving Ground — Dahlgren, Virginia
1951 — 18-minute film
This film shows the Naval Proving Ground at Dahlgren, Virginia as it operated in 1951, demonstrating how naval ordnance was tested. Established in 1918 on the Potomac River because the older Indian Head proving ground had run out of room for longer-range guns, Dahlgren gave the Navy a down-river range where full-charge shots could be fired and their fall of shot observed and recovered.
Every new naval gun, projectile, and lot of smokeless powder had to be “proofed” before it went to the fleet — fired under controlled conditions to confirm it met specification and was safe. The film follows that work: mounting and boresighting the guns, firing proof rounds down the range, measuring muzzle velocity and chamber pressure, and inspecting the guns and recovered projectiles afterward. Dahlgren was also where the Navy’s range tables and exterior-ballistics data were verified by live fire, and in later decades it became a center for computer-based fire control and weapons research. The facility remains in use today as the Naval Surface Warfare Center, Dahlgren Division.