During which process is the round inserted into the barrel?

Chambering is the process during which a round is inserted into the barrel of a firearm. This occurs after the firearm has been loaded and involves the movement of a cartridge from the magazine into the chamber, which is the part of the barrel that holds the round ready for firing. Proper chambering is essential for ensuring that the firearm operates correctly, allowing the round to be fired safely and effectively.

In understanding this process, it's important to note that extracting refers to the removal of a spent cartridge from the chamber after firing, while ejecting describes the expulsion of that cartridge from the firearm. Cocking is the action of preparing the firing mechanism, such as pulling back the hammer or striker in readiness to fire again. These actions are distinct from chambering, which specifically focuses on loading a round into the chamber for firing.