What is the function of the bolt in a bolt-action rifle?

The bolt in a bolt-action rifle serves a crucial role in the functioning of the firearm. Its primary function is to seal a cartridge into the chamber when closed. This sealing is essential for creating the necessary pressure needed to propel the bullet when the cartridge is fired. When the bolt is pushed forward and locked into place, it ensures that the cartridge is securely positioned and prevents gas from escaping during ignition.

This mechanism also allows for a straightforward operation when reloading. The shooter can pull the bolt back to eject the spent casing and chamber a new cartridge smoothly. Thus, understanding the bolt's role highlights its importance in the overall operation and safety of the rifle.