6.5-300 Weatherby Magnum
Rifle cartridge
From Wikipedia, the free encyclopedia
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 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Left: 6.5mm Grendel. Right: 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) | |||||||||||||||
| Land diameter | .256 in (6.5 mm) | |||||||||||||||
| Neck diameter | .538698798658578 in (13.682949485927 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 | |||||||||||||||
| Maximum pressure (S.A.A.M.I.) | 65,000 PSI (448 MPa) | |||||||||||||||
| Ballistic performance | ||||||||||||||||
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| Test barrel length: 26 Source: Weatherby[1][2] | ||||||||||||||||
Background
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.[citation needed]
Availability
Weatherby is currently[when?] the only manufacturer of rifles chambered in the 6.5-300 Weatherby Magnum, as well as the only current supplier of ammunition. Brass cases are available from Weatherby and Petersen for handloading.[5][6] Cases can also be formed by necking down .300 Weatherby Magnum brass.[citation needed]
