6.5-300 Weatherby Magnum

The 6.5-300 Weatherby Magnum is a 6.5mm cartridge created by Weatherby in 2016 as its own rendition to the ever-growing 6.5mm long range rifle market.[2]

6.5-300 Weatherby Magnum
Type	Rifle
Place of origin	USA
Production history
Designer	Weatherby
Designed	Roy Weatherby played with design in the 1950s. It wasn’t commercialized until 2016.
Manufacturer	Weatherby
Produced	2016
Specifications
Parent case	.300 Weatherby Magnum
Case type	Belted, 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 length	2.825 in (71.8 mm)
Overall length	3.600 in (91.4 mm)
Case capacity	98 gr H2O (6.4 cm^3)
Rifling twist	1-8"
Primer type	Large 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 the newest in Weatherby's lineup this cartridge is designed to be in direct competition to 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

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

See also

• List of rifle cartridges
• Table of handgun and rifle cartridges

References

1. "Archived copy". Archived from the original on 2016-11-08. Retrieved 2016-11-07.CS1 maint: archived copy as title (link)
2. http://www.americanrifleman.org/articles/2016/10/20/the-new-65-300-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. http://www.weatherby.com/products/ammunition/cartridges/6-5-300-wby-mag.html