Gun
From The Dreadnought Project
A Gun during the dreadnought era was generally a powerful weapon firing a heavy projectile at high velocity. When this term is used on this site, it will generally mean a weapon firing a shell weight 3 pounds or more and requiring several men to load, aim and fire.
Gunnery is such a rich topic that "gun" soon proves itself too vague to stand alone. It will often, on this site, mean a single gun barrel, but this implies a breech (in the case of modern guns of this period), a mounting or turret, and also a sight for aiming.
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