MrP
Banned
and shells have fairly short range and you do need to expend more of them, depending on FC. Besides, costs would be high as shells for BBs gun could only be used on BBs while you can stick missiles on practically anything that floats (and lots of things that don't)
The issue of range also came up, and I think an 8" gun with a range in excess of a hundred miles was mentioned. I don't think anyone was discussing battleship calibre weaponry; it was more - as The Dean says above - navalising existing artillery or - in the case of an 8" gun - creating a new gun (also sub-battleship in calibre). I can't recall the name of the thread, I'm afraid.