A prepackaged bug gun magazine for a gas powered weapon includes a body adapted to fit within an opening in the weapon. The magazine has a first surface, a second surface and at least one chamber. The length of the chambers extends from the first surface to the second surface. A first frangible sealing membrane is removably affixed to the first surface of the body and seals the first end of the chamber. A second frangible sealing membrane is removably affixed to the second surface of the body and seals the second end of the chamber. Particulate projectiles are located within the chambers and sealed in place by the first and second frangible sealing membranes. Thus, the invention solves the problem of revolvers that have chambers open at least one end where particulate projectiles tend to fall out of the cylinder and allows a revolver that can be carried with a series of loaded chambers without loss of the particulate projectiles. An indexing system aligns the chamber with a barrel of the weapon. Discharge causes pressurized gas to breach the first membrane and impact of the particulate projectiles will breach the second membrane, permitting the projectiles to enter the barrel.