6.5-300 Weatherby Magnum

Type

Rifle

Place of origin

USA

Production history

Designer

Weatherby

Designed

Roy Weatherby experimented with the 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 cm³)

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]

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]

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Transcription

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.

References

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

Wikimedia Commons has media related to 6.5 mm 300 Weatherby Magnum.

v t e Weatherby firearms and cartridges
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Rifles	Mark XXII Mark V Vanguard Vanguard Series 2 Varmintmaster Threat Response Rifle
Shotguns	Athena Orion O/U Orion SxS PA-08 PA-459 SA-08 SA-459
Cartridges	.220 Weatherby Rocket .224 Weatherby Magnum .228 Weatherby Magnum .240 Weatherby Magnum .257 Weatherby Magnum 6.5 Weatherby RPM 6.5-300 Weatherby Magnum .270 Weatherby Magnum 7mm Weatherby Magnum .300 Weatherby Magnum .30-378 Weatherby Magnum .338 Weatherby RPM .338-378 Weatherby Magnum .340 Weatherby Magnum .375 Weatherby Magnum .378 Weatherby Magnum .416 Weatherby Magnum .460 Weatherby Magnum

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This page was last edited on 16 October 2023, at 03:00