American coastal defences test out their large artillery guns.
Full title reads: "America. 'The big guns bark'. US Army's 12" Coast Defence guns hurl quarter-of-a-ton shells over 16 miles in test shoot."
United States of America (USA).
A man opens the breech of a large artillery piece. Great shot down the barrel of 12" calibre gun, light plays on the rifling, one can see a shell being loaded.
Shots of men preparing the gun to fire. The gun is fired. Shots of other coastal defence guns being test fired. Good shot as gun barrel is raised towards camera. More shots of guns being fired.