The Remington Core-Lokt Copper .300 Winchester Magnum 180 gr Copper HP is a centerfire rifle hunting load built around a lead-free copper hollow point bullet for big-game use. It’s designed to deliver dependable terminal performance at typical .300 Win Mag velocities while using brass-cased construction suited to common bolt-action and semi-automatic platforms chambered in .300 Winchester Magnum.
Key Features
Lead-free copper hollow point Solid copper bullet construction supports jurisdictions or hunting preferences that require non-lead projectiles while using a hollow point design intended for controlled expansion.
180-grain hunting bullet A common .300 Win Mag bullet weight that balances trajectory, energy, and recoil for medium-to-large game applications.
Core-Lokt Copper bullet design Built to emphasize expansion consistency and weight retention typical of monolithic copper hunting bullets.
Brass case Brass-cased construction supports reliable extraction and is generally compatible with standard resizing and reloading practices.
Big-game, longer-range intent The load is positioned for big game and longer-range hunting where maintained velocity and predictable terminal behavior matter.
Generational Improvements
Non-lead evolution Moves from traditional lead-core hunting bullet construction to a lead-free copper projectile for compliance and reduced lead exposure in the field.
Monolithic bullet integrity Copper one-piece construction is designed to reduce jacket/core separation concerns associated with some conventional designs.
Specifications
Model: R27858
Cartridge .300 Winchester Magnum.
Bullet weight 180 grain.
Bullet type Copper hollow point (lead-free).
Muzzle velocity 2,850 fps (published; actual velocity varies by barrel length and firearm).
Muzzle energy Approximately 3,247 ft-lb (derived from published velocity; varies by barrel length and firearm).
Ballistic coefficient 0.330 (published).
Case material Brass.
Primer type Centerfire.
Intended use Big game and longer-range hunting.
Competing Items
Federal Premium Trophy Copper .300 Win Mag
Hornady Outfitter .300 Win Mag CX
Barnes VOR-TX .300 Win Mag TTSX
Winchester Deer Season XP Copper Impact .300 Win Mag
Nosler E-Tip .300 Win Mag
The Remington Core-Lokt Copper .300 Winchester Magnum 180 gr Copper HP is a lead-free big-game load that pairs a copper hollow point bullet with published .300 Win Mag velocities for hunting-focused performance. Its monolithic bullet construction and standard brass-cased format fit common needs for durability, consistency, and non-lead compliance.
