Sustained fire needs people and ammunition handling

A commenter recalls a Vickers gun test conducted as the weapon left British Army service, in which armourers fired five million rounds. Each team needed a gunner, a loader, and a third person with a shovel to clear spent cases. The anecdote turns sustained fire from a barrel-performance figure into a personnel and material-handling problem. Beside the BC-304 railgun discussion, it shows why ammunition volume and supporting crew grow well beyond the number of people who aim the weapon.