IMO, if we go with the "scaled down" theory - which I particularly like, I don't really know why - then non-projectile weapons might still require charges. Hybrid guns still need individual charges, but I don't think they're "thrown" the way a projectile weapon is. So for a hybrid pistol, I don't know, perhaps it's a battery and charges, or perhaps each charge has a way to power itself for one release of the stored payload.
Railguns could be effective in that same field, but again it would seem they'd need an internal power source as well as the charges they'd be firing. The only totally self-contained one I could think of would be a laser pistol, which would need a crystal and power source - so you'd probably just switch out the battery when it got low, or something to that effect. vOv