We assume that if your character has a bow, they’re well supplied with standard arrows. If you have a gun, they’re well supplied with standard bullets of the applicable type. But if they’ve picked up specialized ammunition at some point, be prepared to keep track of this limited arsenal.

Tip: Your party might want to play a campaign that feels grounded or gritty. If so, you can monitor and limit the acquisition of supplies such as food, ammunition, and other sundries. Have a discussion with your GM and table about the cost of goods and the availability of materials in your world.