6.5×47mm Lapua

From Wikipedia, the free encyclopedia
6.5x47mm Lapua
Type Rifle
Place of origin  Finland
Production history
Designer Nammo Lapua Oy
Manufacturer Nammo Lapua Oy
Produced 2005
Specifications
Bullet diameter 6.71 mm (0.264 in)
Neck diameter 7.41 mm (0.292 in)
Shoulder diameter 11.53 mm (0.454 in)
Base diameter 11.95 mm (0.470 in)
Rim diameter 12.01 mm (0.473 in)
Rim thickness 1.37 mm (0.054 in)
Case length 47 mm (1.9 in)
Primer type Large rifle for Prototypes, small rifle since start of production
Ballistic performance
Bullet weight/type Velocity Energy
6.7 g (103 gr) Scenar 939 m/s (3,080 ft/s) 3,087 J (2,277 ft·lbf)
8.0 g (123 gr) Scenar 880 m/s (2,900 ft/s) 3,098 J (2,285 ft·lbf)
9.0 g (139 gr) Scenar 820 m/s (2,700 ft/s) 3,028 J (2,233 ft·lbf)
Source(s): Lapua (6.5x47 Lapua)

6.5x47mm Lapua (or 6.5x47mm) is a rifle cartridge that was developed specifically for 300m-1000m competition by ammunition maker Nammo Lapua and the Swiss rifle manufacturer Grünig & Elmiger AG in 2005.[1]

Features

The cartridge has many special features including:[2]

  • The cartridge chamber dimensions are optimized for target bullets.
  • High pressure level (435 MPa / 63090 psi) and optimized powder capacity enables high velocity and flat trajectory.
  • Reduced barrel wear compared to 6mm Norma BR.
  • The 6.5x47mm Lapua has a base diameter and overall length similar to the 7.62x51 mm, allowing it to accept the same bolt heads and fit into similar actions and magazines.

Performance

The 6.5x47mm was designed from the beginning by Lapua to optimize accuracy, barrel life, and case capacity in a 6.5mm cartridge for target shooting. The 6.5x47mm travels at slower speeds than comparable 6.5mm/.260 cartridges such as the 6.5mm Creedmoor, or the .260 Remington, because of its shorter case length.[3]

See also

Notes

  1. ↑ 6mmbr.com October 2005 News, Features, and Products
  2. ↑ Lapua New Products
  3. ↑ Smith, Zak. "6.5mm Shootout: .260 Remington vs. 6.5x47 Lapua vs. 6.5 Creedmoor". 

External links


This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.