What is the act of creating a grip between the bolt assembly and chamber known as?

The act of creating a grip between the bolt assembly and the chamber is known as locking. During this process, the bolt mechanism secures the cartridge within the chamber, ensuring that it is held firmly in place. This grip is crucial because it allows for the safe and effective transfer of energy from the firing pin to the cartridge upon firing. The locking mechanism is designed to withstand the pressure generated when a round is discharged, preventing any potential mishaps or failures that could arise from inadequate chamber security.

This is a critical phase in the cycling of a firearm, as it ensures that the bolt is fully engaged with the chamber before the firing occurs. The reliable function of this mechanism underlines the importance of understanding the components involved in firearm operation. Other options such as extracting, chambering, and firing do not refer specifically to the act of securing the bolt in the chamber; instead, they pertain to different stages in the cycle of a firearm's operation.