Well, I do not know about Reborn, but the land based Hypervelocity Gun is similiar to a giant rail gun. Glorious in its design. A tribute to our great Emperor's forsight and vision.
Using powerful magnetic fields, it accelerates a metal projectile to extreme velocity, piercing a ships hull directly bypassing its shields.
It cannot target anything smaller than a corvette or a single hardpoint on a ship. A small matter, compared to what it can do...
In one shot it will take out a Corellian Corvette or Gunship; two shots removes a frigate, and three shots a Mon Cal. When it hits, the hull damage is severe plus the splash damage destroys/hurts the bigger ship's hard points a great deal.
One nasty weapon to surprise an insubornate Rebel attack force trifulling with one of our lightly defended system...especially with a gravity well generator installed on the space station to keep them from withdrawing into retreat like cowards.
The Rebels will come to understand our rightous rule. Peace and Tranquility all througout the universe. There shall be no more war under one Empire Rule.