The 7.62x39mm and 7x57R were developed decades and continents apart, yet both hold an important place in the history of rifle cartridges. This guide covers each calibre's technical specifications and typical applications.
What Is 7.62x39mm?
Developed in the Soviet Union in the late 1940s, the 7.62x39mm was designed for use in assault rifles including the AK-47 and AKM and became one of the most widely produced military cartridges in the world. It remains popular in both military and civilian use.
7.62x39mm Technical Specifications
| Property | Value |
|---|---|
| Calibre / Diameter | 7.62 mm |
| Case Length | 39 mm |
| Loaded Weight | Approx. 7.9 g (122 grain) |
| Muzzle Velocity | Approx. 710 m/s |
| Muzzle Energy | Approx. 2,000 Joule |
7.62x39mm Applications and Performance
High penetrating power gives the 7.62x39mm effective performance at 100 to 300 metres, with an effective range of roughly 300 to 400 metres. Beyond military use, it is also popular for hunting and sport shooting, particularly for medium-sized game, and its recoil is well managed in gas-operated rifles.
7x57R: Origins
Developed in Germany at the end of the 19th century by firearms designer Paul Mauser, the 7x57R has served both hunting and military purposes throughout its history. It gained popularity alongside the Mauser M98 rifle and saw service with several armies during both World Wars.
7x57R Technical Specifications and Performance
| Property | Value |
|---|---|
| Calibre / Diameter | 7 mm |
| Case Length | 57 mm |
| Loaded Weight | Approx. 8–10 g (123–154 grain) |
| Muzzle Velocity / Energy | Varies with the specific rifle used |
The 7x57R offers strong mid-range accuracy and has long been widely used in hunting rifles.
7x57R Applications
Today the 7x57R is used mainly for medium and large game hunting, as well as for target shooting. Its long production history across multiple countries keeps it popular among hunters and sport shooters.
Safety and Legal Considerations
Both cartridges are high-energy ammunition requiring careful, responsible use. Follow proper safety precautions during storage and transport, and confirm local regulatory and licensing requirements before use. For more on another historic military calibre, see our 7.92x57mm Mauser history and specifications guide, and browse the Small Arms Ammunition category for current products.
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