7x33 Sako
Type Rifle
Place of origin22x20px Finland
Production history
Parent case9x19mm Parabellum
Case typeRimless, bottlenecked
Bullet diameter7.6mm (.2858 in.)
Neck diameter7.9mm (.311 in)
Shoulder diameter9.5mm (.3748 in)
Rim diameter10mm (.3937 in.)
Rim thickness1.27mm (.50 in)
Case length33.3mm (1.3122 in.)
Overall length44.4mm (1.7496 in.)
Rifling twist1 turn in 401.32mm (15.8 in)
Primer typeSmall Rifle
Maximum pressure40,611 psi
Ballistic performance
Bullet weight/type Velocity Energy
78 gr. JHP/FMJ 732 m/s (2,400 ft/s) 1353 J (998 ft.-lbf.)
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.

See alsoEdit


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