An paintball loader for supplying paintballs to a paintball marker is provided. The loader includes a container for storing a plurality of paintballs. An outfeed tube on the container is connected to an inlet tube on the marker. The loader further includes a drive shaft, and a feeder rotatably disposed in the container for feeding paintballs into the outfeed tube. The loader further includes a mechanical drive handle accessible externally of the loader and connected to the drive shaft to manually wind the drive spring.