"Standard-grade gunpowder. Combine 2 of these to create handgun ammo."
Gunpowder is a resource which grants access to more ammunition by combining different types of gunpowders according to the Uses of Gunpowder file.
Handgun Ammo: Crafted by combining two Gunpowders.
Keep in mind that Gunpowder can't be stacked, and attempting to do so will instead result in the creation of Handgun Ammo.