Nosler Trophy Grade ammunition in .300 Winchester Magnum (brand part no. 61056) loads a 180-grain Partition bullet, the design that put Nosler on the map, built for hunters who want proven, controlled-expansion performance in one of the most popular magnums made. Trophy Grade is high-quality, production-run ammunition manufactured to strict tolerances and hand-packaged, using Nosler Custom brass throughout. The Partition’s fully tapered jacket ruptures instantly at the thin jacket mouth, while the gradual thickening along the bullet’s axis controls expansion and curls the jacket uniformly outward at both high and low velocities, and the integral partition wall retains the rear lead-alloy core. For .300 Win Mag hunters who want that classic controlled-expansion performance, this rifle ammunition is built for the hunt.

Key Specifications

• The chambering is .300 Winchester Magnum, one of the most proven flat-shooting big-game magnums made.
• The bullet weighs 180 grains, a versatile weight across deer, elk, and similarly sized game.
• The bullet is a Nosler Partition, a dual-core design with an integral jacket wall between front and rear cores.
• The thin jacket mouth ruptures instantly on impact, curling uniformly outward into a wide mushroom at both high and low velocities.
• The integral partition wall retains the rear core intact, driving continued penetration after the front half expands.
• Muzzle velocity is listed at 2,950 fps, generating about 3,477 ft-lbs of muzzle energy.
• Cost runs about $4.05 per round, in line with premium bonded-tier hunting ammunition.
• Each box holds 20 rounds, enough to confirm zero and still hunt the season.
• Ten boxes ship per case, letting hunters buy by the case for the best per-round value.

Frequently Asked Questions

How does the Partition’s integral wall work? A jacket wall splits the bullet into front and rear cores; the front expands into a mushroom while the wall holds the rear core intact for continued penetration.

What game is the 180gr Partition suited for? The 180-grain weight behind .300 Win Mag velocity handles deer through elk-sized game with reliable expansion and penetration.

Buy Nosler Trophy Grade .300 Win Mag 180gr Partition

Since 1948 the Partition has been the bullet hunters trust when a marginal hit still has to finish the job, and .300 Win Mag is one of its proven homes. Order from our Lubbock, Texas gun shop and it ships fast to your door.