6.5-300 Weatherby Magnum

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]