Bullets

No gun can function without some sort of Ammo. While Yoko's rifle is capable of firing many types of Ammo with ease, the most efficient is specially crafted bullets. These bullets are packed full of gunpowder and Spiral Energy in the form of Raw Spiral Energy. After being fired, you get back the Spent Shell Casing to reload Ammo much cheaper than the original crafting cost.

Crafting Recipes
A bullet can be loaded with gunpowder and Raw Spiral Energy for an expensive, per round reload. But can also be done more efficiently by crafting a Box of Empty Casings.