.338 Lapua Magnum
| .338 Lapua Magnum | |
|---|---|
 |
|
| general information | |
| caliber | .338 Lapua Magnum 8.6 × 70 mm |
| Sleeve shape | rimless bottle neck sleeve |
| Dimensions | |
| Sleeve shoulder ⌀ | 9.46 mm |
| Sleeve neck ⌀ | 9.41 mm |
| Floor ⌀ | 8.61 mm |
| Cartridge bottom ⌀ | 14.93 mm |
| Sleeve length | 69.20 mm |
| Cartridge length | 93.50 mm |
| Weights | |
| Bullet weight | 13.0–19.4 g (200–300 grain ) |
| Powder weight | 4.5–6.3 g (70–97 grain ) |
| Technical specifications | |
| Speed v 0 | approx. 915 m / s |
| Max. Gas pressure | 4200 bar |
| Bullet energy E 0 | approx. 6600 J |
| Lists on the subject | |
The .338 Lapua Magnum is a cartridge designed primarily for use in military sniper rifles . The designation is based on the 0.338 inch ( .338 ) caliber used , the Norwegian company Lapua , which did the main development, and Magnum as an indicator of a reinforced load. The metric caliber designation is 8.6 × 70 mm .
history
In the early 1980s, NATO required a high-performance sniper cartridge for combat ranges beyond that of the introduced 7.62 × 51 mm NATO or .300 Winchester Magnum . The cartridge is based on the .416 Rigby , whose case was retracted to the caliber .338 (8.59 mm). However, tests showed that gas pressure peaks put too much strain on the sleeve.
The Lapua company redesigned the case in 1987 with the CIP dimensions that are valid today , with deviations from the .416 Rigby, particularly in the base area. The .338 Lapua Magnum was also able to establish itself in long range shooting and - to a modest extent - as a big game caliber.
The projectile is characterized by a ballistic coefficient more than twice as high of around 0.65-0.77 (.416 Rigby 0.25-0.3), which minimizes deflection by wind and air resistance. As a result, a comparatively small scatter circle is achieved over very long distances.
With this caliber, the second-largest confirmed kill in a war effort was achieved in 2009, when the British sniper Craig Harrison killed two Taliban machine guns with one shot each over a distance of almost 2.5 kilometers.
Weapons (selection)
- Arctic Warfare AWP and AWSM
- Ruger Precision Rifle Magnum
- Brugger & Thomet APR 338
- Blaser R8
- G29 rifle
- DSR-precision DSR 1
- PGM Précision 338
-
Sako
- TRG -41
- TRG-42
- TRG M10
- Barrett M98B
- Unique Alpine TPG-3 A4
- Savage 110 BA
- Steyr SSG M1
Web links
- CIP: 338 Lapua Mag.
- .338 Lapua Magnum / .338 Lapua Sniper / 8.6x70 / SAA 4640 / ECRA-ECDV 09 069 BGC 010. municion.org, accessed September 1, 2019 (Spanish).
Individual evidence
- ↑ a b c d e f C.IP: 338 Lapua Mag. (Dimensions, English)
- ↑ Norma: .338 Lapua Mag.Sierra, Specifications ( Memento of November 22, 2016 in the Internet Archive )
- ↑ Adam Arnold: Super Sniper Kills Taliban 1.5 Miles Away. In: Sky News . May 3, 2010; Archived from the original on May 6, 2010 ; accessed on February 18, 2017 (English).
- ↑ Brit sniper makes double-kill at 1:54 miles with .338 Lapua Mag. In: AccurateShooter.com. May 3, 2010, accessed August 31, 2019 .