The Weatherby Select Plus 6.5-300 Weatherby Magnum 140-grain Nosler AccuBond Polymer Tip Boat-Tail Brass 20-round box is a top-tier centerfire rifle cartridge engineered specifically for long-range big game hunting, trophy whitetail management, western mule deer pursuit, and extended-distance elk hunting. A primary limitation with standard 6.5mm cartridges at extended distances is rapid velocity loss, steep trajectory drop, and reduced terminal shock. Weatherby resolves these performance constraints by utilizing the ultra-high-capacity 6.5-300 Weatherby Magnum case—featuring Weatherby's signature double-radius shoulder—to launch a bonded 140-grain Nosler AccuBond projectile at blistering velocities, delivering laser-flat trajectories, minimal wind drift, and devastating downrange energy transfer.
The core technical advantage relies on Nosler's 140-grain AccuBond projectile design. Featuring a white polymer tip seated atop a streamlined boat-tail profile, the bullet achieves a high ballistic coefficient that preserves downrange velocity and resists crosswind deflection. Upon impact, the polymer tip acts as a wedge to trigger immediate, controlled expansion. The lead-alloy core is thermally bonded to a heavy copper alloy jacket, eliminating core-jacket separation even under extreme close-range impact velocities. This structural bond ensures high retained bullet weight and drives deep through heavy hide, thick muscle, and bone.
Launching its 140-grain bonded bullet at an astonishing 3,375 FPS muzzle velocity (generating over 3,500 ft-lbs of muzzle energy), this Select Plus loading stands as one of the fastest commercial 6.5mm cartridges on the market. Assembled using premium Weatherby-branded reloadable virgin brass cases, clean-burning propellants, and non-corrosive match-grade Boxer primers, the cartridge guarantees uniform chamber pressure curves, ultra-smooth cycling, and positive extraction in Weatherby Magnum long-action rifles. It serves as an elite choice for open-country hunters requiring maximum terminal impact at extended distances.
Key Benefits
- Blistering 3,375 FPS Muzzle Output: Flattens trajectory to shorten time-of-flight and eliminate guessing on holdovers at extreme ranges.
- Thermally Bonded AccuBond Core: Prevents core-jacket separation under high-velocity stress to ensure deep tissue and bone penetration.
- Polymer Tip Dynamics: Resists magazine recoil damage, preserves aerodynamic meplat geometry, and initiates controlled expansion on impact.
- Select Plus Weatherby Brass: Precision-drawn reloadable brass with double-radius shoulder geometry optimizes powder ignition and chamber pressure stability.
Technical Specification
- Ballistics: 6.5-300 Weatherby Magnum | 3,375 FPS Muzzle Velocity | 3,541 Ft-Lbs Muzzle Energy
- Projectile: 140 Grain | Nosler AccuBond | White Polymer Tip | Spitzer Boat-Tail (SBT) | Thermally Bonded Core | Tapered Copper Jacket
- Case/Primer: Precision-Drawn Virgin Weatherby Brass | Clean-Burning Powder | Non-Corrosive Boxer Primed
- Logistics: 20 Rounds Per Box | Weatherby Select Plus Ammunition Series
- Dimensions: Standard 6.5-300 Wby Mag Belted Magnum Geometry | Weatherby Long Action Compatible | SKU: N653140ACB
- Application: Extreme Long-Range Big Game Hunting, Whitetail Deer, Mule Deer, Elk, Pronghorn, and Mountain Game
- Standards: SAAMI Compliant | Weatherby Factory Quality Control Benchmarks
If you’re running a 6.5-300 Weatherby Magnum platform and need consistent external ballistics with reliable terminal performance across extended distances, this load provides a balanced solution. Get proven field performance backed by controlled manufacturing standards, available now from SMKW.
