[Hunpecked]

El_Phil writes: "Large magazine for a railgun or huge reactors, inductors, cooling systems for energy weapons. Hmmmm...."

If you're putting comparable energies on the target--whether "energy beam" or kinetic energy projectile--don't you need to control comparable energies at the source? For example, doesn't the railgun require a substantial "reactor" to generate the current for something like 3 million G's on its projectile (assuming its velocity of 0.1c is attained in one second or less)? If it's less than 100% efficient, it will also require cooling. I'm no engineer, but I suspect it would also require massive conductors, inductors, transformers, etc.