Got a Real-World Weapon or Armor Question? Mk. VI

[Norsesmithy]

But even for a projectile of the same velocity and mass, the railgun will have marginally less recoil because you need to add the mass of the propellant to the equation for a chemically powered firearm.

My primary question is, though, do the heat production drawbacks of a railgun outweigh its advantages over chemically propelled projectiles (including rockets)?

I am not sure that they don't.