However you did address my question as positioning. You said: "To make something large and heavy move faster requires very large actuation systems which in turn, require much greater power."
I would agree with your above analysis regarding actuation and needed power. Basic physics.
Still, I ask can't nuke powered ships re-direct their power to the gun, especially Carriers or CGN's? As a sailor at general quarters I knew that many systems were shut down to give more power to defense and offense and damage control. That was way back in the Cold War, so I don't know how the current systems work, especially on nuke powered vessels.
My point still remains, if these Mark 5 kinetic rounds can be operational, why can't we make make the Howitzer (or a new cannon) more ready capable with radar instead of some old battleship gun pointing in the general direction? I'm thinking I may off base, again no knowledge of artillery.
All kidding aside, Captain's career path...)
All kidding aside, I worked on advanced artillery development for a dozen years and developed a 120mm rifled automated mortar system that was completely self-contained - all communications, fire control, positioning, etc., was built in and it could receive a fire mission - then turn, elevate, load and fire within 18 seconds. No People involved.
No reason that technology couldn't be applied to a 127mm (5") land or sea-based system.