8×63mm patron m/32

The 8x63 mm patron m/32 was a cartridge for the Swedish heavy machineguns from 1932 to the rechambering into 7.62 NATO in 1975. In the late 1920s, the common cartridge in use was 6.5x55 mm which was not considered effective enough for anti-aircraft and indirect fire so the Royal Army Administration tasked AB Bofors to develop the larger round to meet these needs. The resulting round had a muzzle energy nearly 70% greater than the 6.5x55 mm or about 4 900J, which with a 14.2 grams bullet reached a muzzle velocity of ~760 m/s and a maximum range of 5.5 km when fired from a ksp m/36.

The cartridge was used in the following weapons:

• Ksp m/22
• Ksp m/14-29
• Ksp m/36
• Ksp m/39
• Ksp m/42

The ptr m/32 was also used in gevär m/40, which was issued to machine gun squads during WWII.