Defining Ammunition
Modern ammunition varies depending on the type of firearm. Rifles and handguns use a cartridge containing a single projectile (bullet). Shotguns use a shotshell containing either a single slug or a large number of small projectiles (shot or pellets). However, the basic components of cartridges and shotshells are similar.
![Shotshell ammunition Shotshell ammunition with parts labeled](https://ke-courses-production.s3.amazonaws.com/asset_files/production/654/attachments/original/ammo_shotshell_headstamp.jpg?1497618019)