6.5 x 52 R K&S Load Data & Reloading Guide

The 6.5 x 52 R K&S cartridge, also known as the 6.5 mm Krag and Schouboe, originated in Denmark and has historical roots dating back to the early 20th century. This caliber was specifically developed for the Danish Krag-Jørgensen rifle, a firearm used by the Danish military. The "R" in its designation stands for "Rimmed," indicating its rimmed case design, which was typical for military cartridges of that period aimed at ensuring reliability in bolt-action rifles like the Krag-Jørgensen.

Technically, the 6.5 x 52 R K&S features a case length of 52 millimeters and uses bullets with a diameter of approximately 6.5 millimeters. This caliber is notable for its moderately long and tapered case, which aids in smooth feeding and extraction. Case pressures are relatively low compared to modern standards, which ensures longer case life — an important consideration for reloaders. The caliber typically accommodates bullets in the 120 to 140-grain range, providing versatility for various shooting applications.

In terms of ballistic performance, the 6.5 x 52 R K&S offers effective range and accuracy, especially within 300 meters. Its ballistic profile is comparable to other 6.5 mm cartridges, providing a balance between moderate recoil and sufficient stopping power, making it well-suited for medium-sized game hunting. While not as widespread in competitive shooting today, its historical significance makes it a cartridge of interest for enthusiasts and collectors of vintage rifles.

For reloaders, the 6.5 x 52 R K&S presents several advantages. The availability of a variety of commercially produced 6.5 mm bullets allows for experimentation in finding optimal loads, particularly for specialized applications like hunting or historical target shooting. Furthermore, the mild cartridge pressures result in less case wear, extending the longevity of brass, an important economic factor for dedicated reloaders who often prefer to maximize the usability of each component.