.408 Chey Tac
| .408 Chey Tac | |
|---|---|
 |
|
| general information | |
| caliber | .408 Chey Tac |
| Sleeve shape | Bottle neck sleeve, rimless with pull-out groove |
| Dimensions | |
| Sleeve shoulder ⌀ | 15.36 mm |
| Sleeve neck ⌀ | 11.12 mm |
| Floor ⌀ | 10.36 mm |
| Cartridge bottom ⌀ | 16.25 mm |
| Sleeve length | 77.21 mm |
| Cartridge length | 115.50 mm |
| Weights | |
| Bullet weight | 27.15 g (419 grain ) |
| Technical specifications | |
| Speed v 0 | 884 m / s |
| Max. Gas pressure | 4400 bar |
| Bullet energy E 0 | 10500 y |
| Lists on the subject | |
The .408 Chey Tac is a high performance cartridge developed by John D. Taylor and Willi Wordman in 1998. It is intended to close the gap between the .338 Lapua Magnum and the .50 BMG , and from a greater range it has the highest projectile energy of all known rifle ammunition. This special ammunition is fired with rifles such as the CheyTac Intervention , the RND Edge 2500 or the Austrian Voere X3.
ballistics
The goal of the development was to design a compact precision weapon for extreme ranges. The solutions offered so far use the standard .50 BMG caliber , which was originally designed for heavy machine guns. A .50 round is well suited for this task; the heavy projectile loses little speed due to its aerodynamic shape and is insensitive to wind drift , but it causes considerable recoil. The new cartridge should at least soften the recoil, but still offer comparable energy reserves and accuracy over long distances. For this purpose, a particularly long and aerodynamically favorable projectile was designed that also moves beyond the 2000 m limit at supersonic speed . This means that the kinetic energy of the projectile from 700 m is higher than that of the .50 projectile. The effective combat range is given as 1500 to 2500 m.
distribution
The .408 is a decidedly special ammunition. It was only officially included in the data sheets of the CIP , the international body for ammunition standards , on May 22, 2013 . The combination of ammunition and weapon is offered as a high-precision overall system by the developer CheyTac LLC, currently only as a single loader or as a bolt action rifle . The scope of delivery includes a laser rangefinder and a ballistics calculator. Calibrated to the cartridge, it should be able to calculate the trajectory in advance after entering the environmental parameters such as wind speed, temperature, air pressure as well as humidity and earth rotation. As an official weapon, the system has only been used by the Turkish special unit of the Bordo Bereliler and the Polish unit GROM .
In April 2015, the Russian manufacturer Lobayev Arms announced that the SWLK-14S sniper rifle it had produced had hit a target at a distance of 3,400 meters.
literature
- Frank C. Barnes: Cartridges of the World , Krause Publications, Iola (Wisconsin) 2009, page 258, ISBN 978-0-89689-936-0
Web links
- Chey Tac website (English)
Individual evidence
- ↑ a b C.IP .408 Chey Tac (PDF 23.9 kB) ( Memento from August 1, 2016 in the Internet Archive )
- ↑ World record on April 9, 2015: Target hit at 3400 meters! (Video report from the news channel Life news , Russian)
- ↑ World record on April 9, 2015: Target hit at 3400 meters! ( Memento from September 2, 2017 in the Internet Archive ) (an article about it, Russian)