.277 Wolverine

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.277 Wolverine
general information
caliber .277 Wolverine
(6.8 × 39mm)
Sleeve shape Bottle neck
sleeve , rimless with pull-out groove
Dimensions
Sleeve shoulder ⌀ 9.04 mm
Sleeve neck ⌀ 7.85 mm
Floor ⌀ 0.277 inches / 7.04 mm
Cartridge bottom ⌀ 9.60 mm
Sleeve length 38.9 to 39.2 mm
Cartridge length 57.40 mm
Weights
Bullet weight 4.86-12.96 g
Technical specifications
Speed ​​v 0 760 to 850 m / s
Bullet energy E 0 2000 to 2068 y
Lists on the subject

The .277 Wolverine (also .277 WLV) cartridge is a medium caliber developed in 2014 by the American company Mad Dog Weapon Systems,  Inc. mainly for hunting with semi-automatic or fully automatic AR-15 weapons. There is currently no standardization according to  SAAMI  (aimed at) or  CIP .

development

The aim of the development was to obtain a more powerful cartridge in comparison to the standard 5.56 × 45 mm NATO , which can be used in an AR-15 system with as little structural and financial effort as possible. The widespread cartridge case of the 5.56 × 45 mm NATO (.223 Remington) was used as the basis and combined with the bullet of the 6.8 mm Remington SPC . For this purpose, the case was shortened to 39 mm and the case neck was designed in such a way that the STANAG -4172- magazines can still be used, as can the firing pin . All that is needed to adapt to the larger caliber is a new barrel , which is a big advantage over comparable calibers such as the 6.8 mm Remington SPC or 6.5 mm Grendel .

A similar approach was taken with the .300 AAC Blackout (7.62 × 35 mm) caliber , but the .277 Wolverine stayed with a smaller bullet in favor of greater speed .

ballistics

The .277 Wolverine is available in various loads with bullet weights from 75 gr (4.86 g ) to 130 gr (8.42 g), but there are also special subsonic bullets up to 200 gr (12.96 g) for use with silencer . Although the slimmer cartridge case can hold around 30% less propellant charge than that of the 6.8 mm Remington SPC due to its smaller volume , the ballistic performance is quite comparable. Both calibers achieve similar projectile speeds and energy outputs , with only slight advantages in favor of the 6.8 mm Rem. SPC .

Ballistics in comparison

cartridge Bullet weight Barrel length Muzzle velocity Projectile energy after 300 yd (274.3 m)
5.56 × 45 mm NATO (M855) 4 g 16 inches

(406 mm)

884 m / s 785 J.
.277 Wolverine (90 gr) 5.8 g 16 inches

(406 mm)

838 m / s 998 J.
.277 Wolverine (100 gr) 6.5 g 16 inches

(406 mm)

792 m / s 1022 y
.277 Wolverine (110 gr) 7.1 g 16 inches

(406 mm)

762 m / s 1134 J.
.300 AAC blackout

(110 gr)

7.1 g 16 inches

(406 mm)

701 m / s 843 y
.300 AAC blackout

(125 gr)

8.1 g 16 inches

(406 mm)

670 m / s 873 y
7.62 × 39 mm 8 g 16.5 in

(419 mm)

701 m / s 858 J.
cartridge Bullet weight Bullet energy at the muzzle Projectile energy after 250 yd (229 m) Muzzle velocity Bullet speed at 250 yd (229 m) Floor drop after 250 yd (229 m)
5.56 × 45 mm NATO 4 g 1680 J 950 J (56.5%) 914 m / s 688 m / s (75.3%) 163 mm
.300 AAC blackout 7.1 g 1829 J 959 J (52.4%) 716 m / s 518 m / s (72.3%) 330 mm
.277 WLV (95 gr) 6.2 g 1897 J 1025 y (54.0%) 785 m / s 577 m / s (73.5%) 254 mm
6.8 mm rem. SPC 6.2 g 1934 J. 1048 years (54.2%) 792 m / s 583 m / s (73.6%) 249 mm

See also

Web links

Website of Mad Dog Weapon Systems, Inc . (English)

Individual evidence

  1. ↑ Hrachya H .: .277 Wolverine Cartridge is now in the public domain. In: www.thefirearmblog.com. TheFirearmBlog, April 28, 2017, accessed January 9, 2018 .
  2. ^ Luke Stephens: AR-Fu: Introducing the .277 Wolverine. In: https://thegagg.com . GaGG.com - The Gun and Gear Guy, accessed January 9, 2018 .
  3. ↑ Hrachya H .: .277 Wolverine Cartridge is now in the public domain. In: www.thefirearmblog.com. TheFirearmBlog, April 28, 2017, accessed January 9, 2018 .
  4. ↑ Will Chambers: .277 Wolverine Range and Hunt Report. In: http://ar15hunter.com . AR15Hunter.com, accessed January 9, 2018 .
  5. ↑ Dick Cupka: .277 Wolverine. In: www.triggertalkradio.com. TriggerTalk Radio, accessed January 9, 2018 .
  6. ↑ Dick Cupka: .277 Wolverine. In: www.triggertalkradio.com. TriggerTalk Radio, accessed January 9, 2018 .
  7. ↑ Dick Cupka: .277 Wolverine. In: www.triggertalkradio.com. TriggerTalk Radio, accessed January 9, 2018 .
  8. ↑ Dick Cupka: .277 Wolverine. In: www.triggertalkradio.com. TriggerTalk Radio, accessed January 9, 2018 .
  9. ↑ Dick Cupka: .277 Wolverine. In: www.triggertalkradio.com. TriggerTalk Radio, accessed January 9, 2018 .
  10. ↑ Dick Cupka: .277 Wolverine. In: www.triggertalkradio.com. TriggerTalk Radio, accessed January 9, 2018 .