I already tried that and tried it again. I went to the actor browser>INVENTORY>AMMO>[myweapon'snameAMMOPROPERTIES]>AMMUNITION: The damage was already set to 3000, so I set it to 20,000, and it still took 2 hits with my sniper rifle to kill a BATTLE DROID!!
Will some one please tell me how to fix this? Does it have something to do with the fact that the effect of my projecile is a wookie turret projecile?