Final answer:
Police shotguns are typically loaded using pump action or semi-automatic methods, with pump action requiring manual operation of the slide mechanism and semi-automatic using the energy from firing to cycle shells.
Step-by-step explanation:
The method used to load a police shotgun can vary, but among the options provided, both pump action and semi-automatic are commonly used methods.
- Pump action shotguns require the user to manually cycle the action by moving a slide mechanism, which ejects the spent shell and chambers a new cartridge. This is often seen in many police and security force standard issue shotguns.
- Semi-automatic shotguns use the energy from the firing of a shell to automatically cycle the next shell into the chamber. This allows for quicker follow-up shots as the shooter does not need to manually operate the action.
Bolt action and lever action are less commonly used in modern police shotguns and are more likely to be found in hunting and sport shooting.