The Nosler Trophy Grade .300 Remington Ultra Magnum (RUM) 180-grain AccuBond Spitzer Soft Point Brass 20-round box is a top-tier centerfire rifle cartridge engineered specifically for long-range big game hunting, trophy elk, moose, and large dangerous game pursuits. Ultra-magnum cartridges generate extreme impact velocities that can cause non-bonded hunting bullets to disintegrate or suffer jacket-core separation upon contact with heavy bone or thick tissue, resulting in shallow penetration and failed terminal performance. Nosler solves this critical failure mode through its proprietary AccuBond projectile design, which chemically fuses the lead core to the copper alloy jacket to guarantee structural integrity, deep penetration, and high weight retention at extreme impact velocities.
The primary technical advantage centers on Nosler's 180-grain AccuBond bullet architecture. A white polymer tip sits atop a heavy copper alloy jacket, preventing nose deformation in the magazine during recoil while streamlining the bullet's ogive for a sleek, drag-reducing boat-tail profile. Upon high-velocity contact, the polymer tip initiates controlled, uniform expansion while the proprietary bonding process permanently attaches the lead core to the jacket wall. This bonded construction prevents jacket separation, allowing the projectile to retain 60% to 70%+ of its total weight while plowing through dense shoulder structures and deep muscle tissue.
Launching its 180-grain AccuBond projectile at a blistering factory-rated 3,250 FPS muzzle velocity (generating 4,221 ft-lbs of muzzle energy), this Trophy Grade load maximizes the .300 RUM's massive case capacity to yield exceptional flat trajectories, minimal holdover, and heavy downrange knock-down power. Assembled in Nosler's custom-prepped virgin brass cases—featuring deburred flash holes, uniform primer pockets, and strict neck tension—alongside clean-burning, temperature-stable propellants and non-corrosive match Boxer primers, the cartridge ensures smooth bolt-action feeding, consistent chamber sealing, and positive extraction.
Key Benefits
- Chemically Bonded AccuBond Core: Fuses the lead-alloy core to the heavy copper jacket to eliminate separation and preserve 60-70%+ weight retention.
- White Polymer Tip: Maintains clean aerodynamic shape in the magazine, reduces drag, and triggers reliable, uniform expansion on impact.
- Blistering 3,250 FPS Velocity: Generates 4,221 ft-lbs of muzzle energy for ultra-flat trajectories and decisive long-range knockdown power.
- Custom Prepped Nosler Brass: Fully prepped virgin cases guarantee uniform internal volume, tight velocity spreads, and smooth chambering.
Technical Specification
- Caliber: .300 Remington Ultra Magnum (.300 RUM)
- Ballistics: 3,250 FPS Muzzle Velocity | 4,221 Ft-Lbs Muzzle Energy
- Projectile: 180 Grain | Nosler AccuBond | Spitzer Soft Point (SP) | White Polymer Tip | Chemically Bonded Lead Core | Boat-Tail Base
- Case/Primer: Precision-Drawn Nosler Custom Prepped Virgin Brass | Clean-Burning Powder | Non-Corrosive Match Boxer Primed
- Logistics: 20 Rounds Per Box | Nosler Trophy Grade Ammunition Series
- Dimensions: Standard .300 RUM Geometry | SKU: NOS60065
- Application: Big Game Hunting, Trophy Elk, Moose, Bear, Bighorn Sheep, and Extended-Range Big Game Hunting
- Standards: SAAMI Compliant | Nosler Quality Control Benchmarks
If you're running a .300 RUM platform and need predictable terminal performance at extended distances without sacrificing penetration on heavy bone, this load provides a mechanically consistent solution. Get verified performance and lot-to-lot consistency backed by Nosler manufacturing standards, available now from SMKW.
