Does the Navy have any ammo for the gun yet?
No, and they’re going to shelve it for now according to article.
Of course not.
But, Popular Mechanx keeps saying they have rail guns, lasers, and particle beams.............
With the reduced number of ships in the class, the cost of the gun system’s rocket-guided shells also jumped to at least $800,000 apiece, which analysts said contributed to the change in the destroyers’ mission. The Navy chose to cancel purchase of those munitions, and new ammo for the guns has yet to be determined, though the service is “actively looking” for other rounds
With prices like that, it might be cheaper to pay off the enemy to surrender.