What is a belted cartridge?

A belted cartridge is a type of cartridge used in firearms, characterized by a belt-like groove around the outside of the case, near the base. This design was originally used to reinforce the case, to prevent the high-pressure gases generated by firing from rupturing it. The first belted cartridge was the .375 H&H Magnum, introduced by the British company Holland & Holland in 1912, and since then, the design has been used in a variety of calibers for hunting and military rifles.

Belted cartridges typically have a larger diameter than their non-belted counterparts and are often used for high-powered rifles with longer ranges. They are used in firearms such as the Remington 7mm Magnum, the Weatherby .300 Magnum, and the Winchester .338 Magnum.

The belt itself does not contribute to the cartridge's performance but rather serves as a reference point for headspacing, which is the process of positioning the cartridge correctly in the chamber of a firearm. The belt allows the cartridge to rest securely against the chamber's shoulder and provides a consistent starting point for the cartridge's ignition process.

In summary, belted cartridges are a type of ammunition used in firearms that feature a belt-like groove around the outside of the case, near the base. They are used in high-powered rifles for hunting and military applications and serve as a reference point for headspacing.