Apart from the Wrench and Research Camera, every weapon that Jack uses has different types of ammunition in BioShock. All weapons have a base ammo variant (abundantly found and purchased), an advanced ammo variant (rarely found and bought), and an inventable ammo variant (extremely hard to find but otherwise able to be created at a U-Invent machine): * Auto Round * Bolt * Buck * Chemical * Film * Grenade * Pistol Round