Abstract: An indexing helical magazine for use with delicate projectiles, such as pellets and paint balls. The magazine has a housing with a helical rib extending partially into the housing. A carrier for the projectiles is rotatably coupled within the housing and guides the projectiles along the helical rib. An end cap coupled to the housing feeds the projectiles from the housing into the gun. A ratchet coupled to the drive member rotates the drive member via interaction with a camming member. The indexing magazine may also include a loading member for disengaging the ratchet and the carrier so that projectiles can be loaded into the carrier. Finally, the magazine may also include a stop member for preventing reverse rotation of the carrier.