Editing Cooking off (section)

=== Caseless ammunition ===
[[Caseless ammunition]] eliminates the [[metal]] case that typically holds the [[primer (firearms)|primer]] or [[igniter]] and the powder charge ([[smokeless powder]]) that propels the [[bullet]]. The metal case absorbs a large portion of the [[waste heat]] of firing. Ejecting this hot, empty case removes that heat from the weapon. With caseless rounds, other means of reducing waste heat are necessary, especially in automatic fire.