6 x 52 R BB2

The 6x52R BB2 (Büchsenpatrone Bergmann 2) is a rimmed centerfire cartridge that was developed in the early 20th century by Theodor Bergmann, a German gunmaker. It was designed for use in single-shot and double rifles for hunting medium to large game in Europe.

The cartridge has a bullet diameter of .243 inches (6.17mm) and a case length of 52mm. It is based on the 8x57mm Mauser case, which is necked down to accept a 6mm bullet. The rimmed design of the cartridge makes it easy to extract from the chamber of a single-shot or double rifle.

The 6x52R BB2 is known for its high accuracy, flat trajectory, and excellent terminal ballistics. It is typically loaded with medium to heavy bullets weighing between 80 and 105 grains, which are capable of delivering high levels of energy to the target.

The cartridge is commonly used for hunting deer, wild boar, and other medium to large game in Europe, where it has earned a reputation as a reliable and effective cartridge. It is also popular among hunters who prefer the classic style of single-shot and double rifles, which are often chambered for the 6x52R BB2.