|Place of origin||Finland|
|Parent case||9x19mm Parabellum|
|Case type||Rimless, bottlenecked|
|Bullet diameter||7.6mm (.2858 in.)|
|Neck diameter||7.9mm (.311 in)|
|Shoulder diameter||9.5mm (.3748 in)|
|Rim diameter||10mm (.3937 in.)|
|Rim thickness||1.27mm (.50 in)|
|Case length||33.3mm (1.3122 in.)|
|Overall length||44.4mm (1.7496 in.)|
|Rifling twist||1 turn in 401.32mm (15.8 in)|
|Primer type||Small Rifle|
|Maximum pressure||40,611 psi|
|Test barrel length: 24 in.
Source(s): Ammo Encyclopedia, 2nd Edition, Page 395, Michael Brussard
The 7x33mm Sako cartridge was created in Finland in 1942 as a small game cartridge for animals such as the Capercaillie and Black Grouse. It is based on a 9x19mm Parabellum case that has been lengthened and necked down to accept a 7.21mm bullet. The cartridge overall length is 44.30mm with a case length of 33.30mm and a base diameter of 10mm. The Bertram company of Australia makes brass for it.
Rifles chambered in this caliber include the Sako Models L42 and L46.
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