.416 Barrett

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.416 Barrett
Type Rifle
Place of origin United States
Production history
Designer Ronnie Barrett
Designed 2005
Specifications
Bullet diameter .416 in (10.6 mm)
Neck diameter .465 in (11.8 mm)
Shoulder diameter .732 in (18.6 mm)
Base diameter .797 in (20.2 mm)
Case length 3.27 in (83 mm)
Overall length 4.58 in (116 mm)
Case capacity 200 gr H2O (13 cm³)
Ballistic performance
Bullet weight/type Velocity Energy
400 gr (26 g) Solid Brass 3,250 ft/s (990 m/s) 9,381 ft·lbf (12,719 J)

The .416 Barrett centerfire rifle cartridge is a proprietary bottlenecked centrefire rifle cartridge designed in 2005. It is an alternative to the .50 BMG in long-range high-caliber rifles. It was designed in response to a request for a medium/heavy rifle/cartridge combination that was issued from Crane Naval Surface Warfare Center in late 2004.

Contents

[edit] Design

The Barrett .416 cartridge was designed by Pete Forrest, who recently retired from Barrett. The bullet was designed using NACA low-supersonic-drag equations to design the shape.[1]

The cartridge was designed as an improvement to the .50 BMG cartridge, a common machine-gun and rifle cartridge. It is similar to a wildcatted .50 BMG case, shortened to 3.27 inches (83.06 mm) and necked down to accept a .416 caliber, 400-grain (26 g) projectile;[2][3] It is however of proprietary dimension.[4] Due to the fact that the two cartridges, the .50 BMG and .416 Barrett, have identical base dimensions, all that is needed to convert a rifle to use one or the other cartridge is a relatively quick barrel swap.

For some time, the only commercially-available rifle in this chambering was the single-shot Barrett Model 99. Recently the Bohica Arms FAR-50 MK-II (a bolt-action, single-shot AR-15 upper receiver conversion) became also available in .416 Barrett[5].

[edit] Performance

[edit] Barrett 400 gr solid brass boattail spitzer bullet

The use of a lighter, narrower bullet results in a significantly higher muzzle velocity and superior ballistic performance to the .50 BMG, and is claimed to be even more powerful than the .50 BMG at 1,000 yards (though its power deteriorates below the BMG's after that).[6] Barrett claims that this cartridge is capable of propelling a 400 gr solid brass boattail spitzer bullet out of the 32-inch (810 mm) barrel of a Model 99 single-shot rifle at 990 m/s (3250 ft/s), giving it a ballistic coefficient between .943-.989 and keeping the projectile supersonic out to 2286 metres (2500 yards).

In a second season episode of Future Weapons the host (Richard Machowicz, a former Navy SEAL) engages in a shooting competition with another sniper. "Mac" achieves a cold-bore first-shot "kill" at 2,500 yards (2,286 m) using a .416 Barrett Model 99 rifle while his competition, using a .50 BMG, required 3 shots to achieve a "kill". The .416 Barrett Model 99 rifle Mr. Machowicz used during this competition was equipped with a Barrett Optical Ranging System (BORS) module attached to the telescopic sight.

VideoLink: http://www.guba.com/watch/2001011740 (11mins22sec into episode)

[edit] .416 Barrett MSG bullet

Improvement beyond this standard while still using standard .416 Barrett brass seems possible, but the bullets have to be specially designed. An example of such a special .416 Barrett very low drag extreme range bullet is the German CNC manufactured mono-metal 27.5 gram (424 gr) .416 Barrett MSG (G1 BC ≈ 1.103 – this Ballistic coefficient (BC) is calculated by its designer, Mr. Lutz Möller, and not proven by Doppler radar measurements). The solid brass .416 Barrett MSG bullet has an overall length of 56 mm (2.205 in) and derives its exceptional low drag from a radical LD Haack or Sears-Haack profile in the bullet's nose area. Rifles chambered for this cartridge bullet combination, with a cartridge overall length of 116 mm (4.567 in), have to be equipped with custom made 1016 mm (40 in) long 279 mm (1:11 in) twist rate barrels to stabilize the .416 Barrett MSG projectiles and attain a projected 1032 m/s (3385 ft/s) muzzle velocity.[7]

[edit] Muzzle velocity

  • 25.9 g (400 gr) solid brass projectile: 990 m/s (3250 ft/s); 9380 ft·lbf (~12717 J).
.416 Barrett ballistic comparison with other long-range sniper cartridges
Cartridge Bullet weight gr Muzzle velocity ft/s (m/s) Muzzle energy ft·lbf (J)
.338 Lapua Magnum 250 2970 (905.2) 4893 (6634.0)[8]
.338 Lapua Magnum 300 2717 (828.1) 4919 (6669.2) [9]
.408 Chey Tac 305 3500 (1066.8) 8298 (11250.5) [10]
.408 Chey Tac 419 3000 (914.4) 8376 (11356.3) [10]
.416 Barrett 400 3250 (990.6) 9380 (12717.5)
.50 BMG 700 2978 (907.7) 13971 (18942.1)

[edit] Legality

A few jurisdictions in the United States, most notably California as well as a few nations such as Australia, Belgium, Italy and the Netherlands restrict or prohibit civilian ownership of rifles chambered to use the .50 BMG cartridge, but not the .416 Barrett.

[edit] Synonyms

  • 10.5 x 83 mm

[edit] See also

[edit] References

  1. ^ .416 Barrett by Lutz Möller (including images)
  2. ^ cartridge picture
  3. ^ "Barrett FAQ"
  4. ^ "Barrett FAQ"
  5. ^ Bohica Arms FAR-50 MK-II
  6. ^ Airborne Combat Engineer's article on the .416 Barrett
  7. ^ .416 Barrett MSG Loads by Lutz Möller (including images)
  8. ^ Lapua product brochure .338 Lapua Magnum ammunition
  9. ^ VihtaVuori Reloading Guide, 2006
  10. ^ a b Cartridges of the World 11th Edition, Book by Frank C. Barnes, Edited by Stan Skinner, Gun Digest Books, 2006, ISBN 0-89689-297-2 pp. 265,541

[edit] External links

VideoLink: http://www.guba.com/watch/2001011740 (11mins22sec into episode)

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