How does the breech block work on a piece of artillery? How is it lowered to allow the shot to be loaded? Does it drop automatically to allow the casing to be
5-INCH GUN MOUNT MARK 40
CHAPTER-9-D
Breech mechanism | Military Wiki | Fandom
Structure of the breechblock. | Download Scientific Diagram
File:QF 4 inch Mk XVI gun breech mechanism diagrams.jpeg - Wikimedia Commons