Hornady Outfitter 300 Winchester Magnum Ammo 180 Grain Hornady CX Polymer Tip Lead Free Box of 20

Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.

For hunters working elk timber, whitetail creek bottoms, or mule deer ridges where weather shifts fast, the Hornady Outfitter 300 Winchester Magnum ammo delivers terminal performance engineered around the all-copper CX bullet. This 180-grain lead-free polymer-tip projectile exits the muzzle at 2960 feet per second, carrying 3502 foot-pounds of energy downrange. Hornady chambers each round in a nickel-plated brass case, sealed at the primer and case mouth to keep moisture out during pack-in hunts. The CX bullet’s monolithic construction means no jacket separation, no core shedding — just controlled expansion and a wound channel that stays open through heavy bone and dense muscle.

Performance at a Glance

The CX (Copper alloy eXpanding) bullet represents Hornady‘s answer to lead-free mandates and deep-penetration requirements on large-bodied game. Its Heat Shield tip resists deformation under aerodynamic friction, preserving the 0.469 G1 ballistic coefficient across the bullet’s flight path. Optimized groove geometry cuts bearing surface and fouling without sacrificing accuracy. At impact velocities above 2000 fps, the polymer tip initiates expansion, driving petals outward while the monolithic shank penetrates. You retain 95% of bullet weight, even after punching through shoulder blade and rib cage.

Nickel-plated cases resist corrosion in wet saddle scabbards and rain-soaked packs, and the waterproof seal at primer pocket and case mouth keeps powder dry through stream crossings. Boxer primers allow reloading — brass survives multiple firings when full-length resized. Browse the full 300 Win Mag ammo inventory for additional bullet weights and constructions.