Just so we’re clear on this, my only two interests in starting this discussion were:
1) Could a Gauss cannon (which a friend has since explained to me is what I have in mind instead of a rail gun, all solenoid and no rail) powered by FF screw up the military balance of power by making ICBMs ineffective? The consensus answer is a resounding no.
2) Would such technology invalidate missiles and bombers as weapons systems and ensure at the very least that if the US insists on wasting money to have firepower they can do so with a mush lesser percentage of GDP? (No more Reagan/Bush II military driven deficits.)