Modern six-inch naval gun compatibility

Could a new 155 mm or six-inch naval gun share ammunition compatibility with land artillery?

Full shell commonality is unlikely, but guidance packages, explosives, and some subcomponents could overlap while naval guns remain larger, faster-firing ship systems.

A ship gun includes much more than the barrel visible above deck. Its complete mount can weigh as much as a main battle tank, with ammunition carousels and handling systems extending as far as three decks into the hull. Fire-control computers and sensors add further equipment beyond the mount itself. The discussion expects a naval six-inch system to use longer guns and larger shells, with greater rate of fire and range than a comparable land system. Common guidance packages, explosives, or subcomponents could still provide economies of scale. Sharing a nominal caliber would not by itself make complete shells interchangeable.