8×63mm patron m/32

The 8×63mm patron m/32 was a bottlenecked centerfire cartridge with a slightly (0.25 mm) rebated rim for Swedish heavy and medium machine guns. It was used from 1932 to the finalization of the rechambering process of these machine guns to 7.62×51mm NATO in 1975.

In the late 1920s, the common service cartridge in Swedish use was the 6.5x55mm skarp patron m/94 projektil m/94 (live cartridge m/94 projectile m/94) service ammunition loaded with a 10.1 g long round-nosed m/94 (B-projectile) bullet which was not considered effective enough for anti-aircraft and indirect fire so the Royal Army Administration tasked AB Bofors to manufacture a larger rifle cartridge to meet these needs. The 8×63mm patron m/32 round had the same overall length as the .30-06 Springfield cartridge, which allowed it to fit in the standard Browning receiver, but used a larger diameter case and uncommon 12.2 mm (0.480 in) diameter bolt face which together with the larger bullet diameter and heavier bullet weight allowed longer effective range. The 8×63mm patron m/32 maximum range was approximately 5500 m when fired from a kulspruta m/36.

The 8x63mm cartridge was used in the following machine guns:
 * Ksp m/22
 * Ksp m/14-29
 * Ksp m/36
 * Ksp m/39
 * Ksp m/42

The 8x63mm was also used in the gevär m/40 bolt action rifle. These were Karabiner 98ks rechambered in Sweden for the 8x63mm and issued to the machine gun troops so their rifles would fire the same round until sold to Israel after the end of WWII.