Topic summary
30 mm
Extracted from the Wikipedia article 30 mm caliber.
Types of ammunition
30 mm weapons are used in a variety of roles. As a result, ammunition in 30 mm comes in several varieties: armor-piercing (AP), high-explosive (HE), airburst, and target practice (TP) rounds. Both AP and HE cartridges commonly possess incendiary or tracer elements, which may be noted in its designation; API and HE-T are Armor-Piercing Incendiary and High-Explosive Tracer respectively.