How is 20 mm ammunition classified?

20 mm ammunition is classified according to its purpose because the design and intended use dictate its specifications and functionality. Different types of 20 mm ammunition are created for specific applications, such as armor-piercing, high-explosive, or training rounds. This classification system allows users to select the appropriate type of ammunition suited for their operational requirements. Understanding the purpose behind each type of round ensures effective utilization in various combat scenarios or training exercises.

While size, design, and manufacturer play roles in the overall understanding of ammunition, the primary classification method focuses on the intended function, making purpose the most critical aspect.