9306.21.00.00 - Cartridges

This classification covers specifically shotgun cartridges, which are ammunition designed for use in shotguns. These cartridges typically contain shot or a slug, propellant, and a primer, all encased in a hull. Examples include birdshot, buckshot, and slug ammunition for 12-gauge, 20-gauge, and other common shotgun calibers.

This category is distinguished from its sibling, HTS 9306.29.00.00, which covers "Other" shotgun cartridges and parts thereof, and air gun pellets. While this node strictly defines *shotgun* cartridges, the sibling category would encompass any remaining types of ammunition for shotguns not specifically detailed here, as well as separate parts of shotgun cartridges and all types of air gun pellets.

As a leaf node, HTS 9306.21.00.00 has no further subcategories. Therefore, classification within this code relies on the precise definition of "shotgun cartridges." The primary differentiating factor for classification here is that the ammunition must be intended for firing from a shotgun, rather than other types of firearms or air guns.