Well it’s a trade-off; if the rounds are much smaller and your dumpinng in less power, you can get a higher rate of fire.
But themal management is a huge problem; you won’t be pumping out 32MJ shots to 100 nm at hundreds of rounds a minute, even on a ship.
Key thing is the barrel erosion problems preventing any refiring at all seem to have largely been solved.
We also have the slight problem that we really don’t have a ship to put it on; the DDG 51 Flt III design is horribly cramped and basically filled just by putting the new AMDR radar on; you can get a small railgun on if you delete the 5” and lose a bunch of VLS cells.
Why does it need a special ship? stick it on a barge for now.
They had better fast track mounting and preparation of this gun fast. World war three is coming within weeks to months, IMHO
The railguns were supposed to be installed in the Zumwalt class destroyers, which are 50% larger than the Arleigh Burkes, and are actually the size of early American Dreadnaughts or late WW2 cruisers. I don’t know how we are supposed to use railguns until we have better batteries and capacitors.