Ecto Bullets, when the proton packs and ghost trap just ain't enough... Inspiration and quote by Patrick H. Clapham.
The party line is that these are ordinary handgun bullets imbued with ectoplasmic energy. In fact, a tiny demon is imprisoned in each bullet, and released to die explosively when the bullet hits. The explosion looks like a ghostly cloud of green or gray vapor, and punches big holes in the mystic image of things. Inanimate targets are not hurt more than usual. Ecto bullets can be fired from normal guns using Guns. They need not be connected to an AI/O port.
Any target damaged by an Ecto Bullet loses a Magic point, in addition to normal damage. An Ecto Bullet that hits an Creature with SupernaturalCreature gets to do damage compared the Magic of the target, rather than Toughness, and is torn, has body parts displaced, turns inside out, and otherwise does very gory things when hit(though this has no extra game effect). DamageImmunity to Summoning protects against the special abilities of ecto bullets, effectively turning them into standard bullets doing normal damage.