Why postwar navies kept testing 6- and 8-inch guns

Were postwar 6- and 8-inch naval gun projects genuine weapon programs or demonstrations that navies had considered every option?

They were genuine attempts to obtain a useful capability, but usually not one important enough to survive competing budget priorities.

The panel rejects the idea that these programs existed only to reassure Congress that every option had been studied. Six- and 8-inch systems promised real range, payload, and naval-fire-support value. Their recurring problem was priority: a useful weapon still had to compete with systems considered essential to fleet survival or strategy. The many proposals between 1945 and 2000 therefore show both sustained operational interest and the vulnerability of optional capabilities in procurement budgets.