| 7x33 Sako | ||||||||
|---|---|---|---|---|---|---|---|---|
| Type | Rifle | |||||||
| Place of origin |
 Finland | |||||||
| Production history | ||||||||
| Designer | Sako | |||||||
| Designed | 1942 | |||||||
| Manufacturer | Sako | |||||||
| Produced | 1942-1960s | |||||||
| Specifications | ||||||||
| Parent cartridge | 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 | |||||||
Ballistic performance
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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 also[]
References[]
- http://www.thegunzone.com/carbine-wildcat.html
- http://www.midwayuk.com/apps/eproductpage.exe/showproduct?SaleItemID=506583
- http://www.ssaa.org.au/stories/historical-collecting-cartridges.html
The original article can be found at 7×33mm Sako and the edit history here.