7 × 64 mm
| 7 × 64 mm | |
|---|---|
 |
|
| general information | |
| caliber | 7 × 64 mm |
| Sleeve shape | Rimless with pull-out groove |
| Dimensions | |
| Sleeve shoulder ⌀ | 10.8 mm |
| Sleeve neck ⌀ | 7.95 mm |
| Floor ⌀ | 7.25 mm |
| Cartridge bottom ⌀ | 11.95 mm |
| Sleeve length | 64 mm |
| Cartridge length | 84.00 mm |
| Weights | |
| Bullet weight | 120-177 grain, 7.8-11.5 g |
| Powder weight | 3.05-3.89 g |
| Technical specifications | |
| Speed v 0 | 779-969 m / s |
| Max. Gas pressure | 4150 bar |
| Bullet energy E 0 | 3200-4154 J. |
| Lists on the subject | |
The 7 × 64 mm cartridge (also 7 × 64 caliber ) is a rifle ammunition . The 7 stands for the nominal caliber of the bullet and 64 for the length of the cartridge case in mm. The 7 × 64 is mainly used as hunting ammunition.
development
Wilhelm Brenneke from Leipzig developed the 7 × 64 mm cartridge and its edge version 7 × 65 mm R in 1917 . These cartridges were Brenneke's answer to the then highly praised .280 Ross and the .30-06 Springfield military cartridge introduced in 1906 .
Brenneke retracted the 8 × 64 mm cartridge he had developed at the time with moderate success to 7 mm and presented the new cartridge as 7 × 64 mm. The 7 × 64 mm had a higher service gas pressure compared to the 7 × 57 mm . Therefore, the bullets fly around ten percent faster than with the 7 × 57 mm and have a longer range. It was not uncommon for the 7 × 64 mm to be referred to as the “miracle caliber”, as several dozen different loads were available on the German market as early as the 1930s .
today
Even today, the 7 × 64 mm is one of the most common rifle cartridges in Central Europe. The fact that civilian military cartridges such as the .308 Winchester , 7 × 57 mm or the 7.92 × 57 mm are banned in some European countries, greatly promoted the spread of the 7 × 64 mm.
The calibers offered numerous that extend the field of application of 7 x 64 mm, are still a reason for acquiring a weapon of this caliber: With lighter bullets is roe deer and chamois , with heavier reds and wild boar hunting.
Comparable caliber
The American caliber .270 Winchester follows a concept similar to the 7 × 64 mm.
literature
- Cartridge portrait 7 × 64 - a powerhouse or a paper tiger? , Game and dog 6/2005.
- Barnes, Frank C. (1997) [1965]. McPherson, ML. ed. Cartridges of the World (8th Edition ed.). DBI Books. Pages 355,374. ISBN 0-87349-178-5 .
Web links
Individual evidence
- ^ Friedhelm Kersting: reloading. Preparation and practice. Cartridges for long and short guns . 5th supplemented and revised edition. German experimental and testing institute for hunting and sporting weapons e. V., Altenbeken 2005, ISBN 3-00-016629-7 , p. 290.
- ↑ Brenneke development history see cartridges and weapons in 7 × 64 mm / 7 × 65 mm R