6.5x55 swedish

The 6.5×55mm Swedish (designated as the 6.5×55 Swedish by the SAAMI and 6,5 × 55 SE by the C.I.P.) is a first-generation smokeless powder rimless bottlenecked rifle cartridge. Other common names for this cartridge include 6.5×55mm and 6.5×55mm Swedish Mauser and less commonly 6.5×55mm Mauser and 6.5×55mm Krag. It was developed in 1891 for use in the new service rifles then under consideration by the United Kingdoms of Sweden and Norway. The two nations had independent armies and consequently the normal procedure at the time was for their respective governments to use the same ammunition and then purchase small arms of their choice. Norway adopted the Krag–Jørgensen rifle, while Sweden adopted a Mauser rifle design.
The 6.5×55mm Swedish cartridge has a smaller bullet diameter and lower free recoil than other full-power service rifle cartridges like the .30-06 Springfield and 7.92×57mm Mauser. Thanks in part to its relatively roomy case which was designed for loading long, heavy 6.5 mm bullets, as well as an uncommon 12.2 mm (0.480 in) diameter bolt face, it has proven more successful than other first-generation smokeless-powder military cartridges of similar caliber, such as the 6×60mm US Navy, 6.5×54mm Mannlicher–Schönauer, 6.5×53mmR Dutch Mannlicher, 6.5×52mm Carcano and 6.5×50mm Arisaka.

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