The video treats the 12-pounder as a three-inch weapon whose practical value was a rate of fire that larger guns could not sustain with contemporary technology. Mount changes could improve elevation, while the six-pounder added another quick-firing weapon. Three-inch and 57 mm calibres therefore combined manageable ammunition with sustained fire rather than chasing maximum shell weight. Their renewed popularity in modern close-in weapon discussions gives the First World War fit a useful technological echo.
Notable Point · 18:46-20:44
Why the three-inch gun kept returning
The monitor's 12-pounder and six-pounder illustrate why three-inch and 57 mm weapons were valued for sustained rapid fire.