Casings are the prerequisite for bullets. They are generally thought of to be a balancing feature to keep bullets from being too easy to make.
Damage is based off of the weapons themselves, so you can't mix and match higher tier bullets with lower tier weapons.
These are constructed with diamonds and are used for laser weapons. 1 Diamond and 1 Space Rock makes 100 bullets without requiring coal.
- In-game, bullet casings are actually the bullet model with the bullet part of the round set invisible to look like a casing.
- Bullets are always one material tier behind the gun you use, keep this in mind when crafting casings. Iron and gold guns use brass casing, diamond guns use iron casing, and gold casings are used for bloodstone guns. Diamond casings are used for laser weapons.