"155 mm" is a very widely used calibre (barrel internal diameter) for artillery guns and their corresponding artillery shells. == Land warfare == === Historic calibres === ==== France - 1874 ==== The 155 mm (6.1 in) caliber originated in France after the Franco-Prussian War (1870–1871).
"155 mm" is a very widely used calibre (barrel internal diameter) for artillery guns and their corresponding artillery shells. == Land warfare == === Historic calibres === ==== France - 1874 ==== The 155 mm (6.1 in) caliber originated in France after the Franco-Prussian War (1870–1871).
Source: Wikipedia "155 mm caliber" · CC BY-SA 4.0
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