Modern ammunition is a correctly assembled cartridge containing a primed case, propellant and a projectile.

It is common for shotshells to also contain a wad and multiple projectiles.

Common types of ammunition are rimfire, centerfire, and shotshells.

related:

• cartridge, blank
• muzzleloader

Footnotes / Sources:

“Glossary ⇒.” Sporting Arms and Ammunition Manufacturers’ Institute. Ed. SAAMI’s Technical Committee. Web. 15-18 Jan. 2011.