With modern technology, how fast and how far could a twin 8-inch naval gun fire, and could point defence stop the shells?
Short answerAbout 150 miles and twenty rounds per minute for a twin mount, with close-in defence offering some interception capability.
NotesThe estimate begins with the demonstrated range ambitions of the 6-inch Advanced Gun System and scales the larger weapon from that reference. Guided 8-inch ammunition could reach around 150 miles, with each barrel firing about ten rounds per minute. A twin mount could therefore deliver twenty heavy rounds per minute, creating a serious magazine-depth and saturation capability. Close-in systems have already been used against artillery and mortar threats, so the gun-versus-defence contest would involve both range and interception capacity.