6.5-300 Weatherby Magnum

The 6.5-300 Weatherby Magnum is a 6.5mm cartridge created by Weatherby in 2016 for the growing 6.5mm long-range rifle market.[2]

6.5-300 Weatherby Magnum
TypeRifle
Place of originUSA
Production history
DesignerWeatherby
DesignedRoy Weatherby experimented with the design in the 1950s. It wasn’t commercialized until 2016.
ManufacturerWeatherby
Produced2016
Specifications
Parent case.300 Weatherby Magnum
Case typeBelted, bottleneck
Bullet diameter.264 in (6.7 mm)
Shoulder diameter.4949 in (12.57 mm)
Base diameter.512 in (13.0 mm)
Rim diameter.5315 in (13.50 mm)
Case length2.825 in (71.8 mm)
Overall length3.600 in (91.4 mm)
Case capacity98 gr H2O (6.4 cm3)
Rifling twist1-8"
Primer typeLarge rifle magnum
Ballistic performance
Bullet mass/type Velocity Energy
127 gr (8 g) LRX 3,531 ft/s (1,076 m/s) 3,516 ft⋅lbf (4,767 J)
130 gr (8 g) Scirocco 3,476 ft/s (1,059 m/s) 3,487 ft⋅lbf (4,728 J)
140 gr (9 g) A-Frame 3,395 ft/s (1,035 m/s) 3,583 ft⋅lbf (4,858 J)
Test barrel length: 26
Source(s): Weatherby[1][2]

Background

As what was then the newest in Weatherby's lineup, this cartridge was designed to directly compete with the 26 Nosler.[3]

Performance

Claimed by Weatherby to be the fastest 6.5mm cartridge available.[4]

Designed in a similar fashion as other Weatherby cartridges, it has a large-for-caliber case capacity, resulting in high velocities. When bullets with high ballistic coefficients are used, trajectories are extremely flat, allowing the projectile to retain a significant amount of energy downrange. These attributes make the 6.5-300 quite effective for long range hunting on medium-sized game.

Availability

Weatherby is currently the only manufacturer of rifles chambered in the 6.5-300 Weatherby Magnum, as well as the only current supplier of ammunition. However, cases could be formed from .300 Weatherby Magnum brass.

See also

References
  1. "Weatherby | 6.5-300 Weatherby Magnum". Archived from the original on 2016-11-08. Retrieved 2016-11-07.
  2. "An Official Journal of the NRA | the New 6.5-300 Weatherby Magnum and Mark V Rifle".
  3. Snow, John B. (September 29, 2016). "First Look: New 6.5-300 Weatherby Magnum Cartridge". Outdoor Life. Retrieved November 7, 2016.
  4. "Weatherby | 6.5-300 Weatherby Magnum". Archived from the original on 2016-11-08. Retrieved 2016-11-07.
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