I admit I don't know the actual capability of a HVP shell be it powder or EM launched. In the case of railgun launch, is there some kind of control of the shell? In a AA/anti- missile application, the incredible velocity of the projectile combined with state of the art radar should offer an enhanced defensive option. What kind of control Is possible with a Railgun projectile? Are there guidance technologies that could survive the enormous g-forces involved with these HVP, certainly this info is not in the public domain .