Federal .300 Winchester Short Magnum (WSM) ammunition (part no. P300WSMB) loads a 180-grain Partition for big-game hunters who want confirmed, repeatable terminal performance. Federal has been a top American ammunition maker for decades, and this loading reflects the same attention to consistency found across its premium lines. A dual-core design keeps a front and rear lead core separated by a solid partition wall, so the front expands while the rear retains weight for deep penetration. Nickel-plated-brass-cased and 20 to a box, it is built to feed reliably through bolt guns and semi-autos chambered for the cartridge. In our rifle ammunition lineup, this .300 Winchester Short Magnum (WSM) loading is a confirmed, dependable choice worth adding to the cart.

Key Specifications

• The chambering is .300 Winchester Short Magnum (WSM), a chambering with wide factory rifle support.
• The bullet weighs 180 grains, setting the balance of velocity and downrange energy this load is tuned for.
• The bullet is a Partition, the projectile Federal chose to load behind .300 Winchester Short Magnum (WSM).
• A dual-core design keeps a front and rear lead core separated by a solid partition wall, so the front expands while the rear retains weight for deep penetration.
• Cases are Nickel-Plated Brass, resisting corrosion and feeding smoothly, with the finish easy to spot in a dark magazine.
• Each box holds 20 rounds, enough to confirm zero and still have rounds on hand.
• A case ships 10 boxes (200 rounds total), ideal for stocking up or buying once for the season.
• At about $2.96 per round, the price reflects the bullet construction loaded into this round.
• The box ships at about 1.6 lb, handy for estimating freight on a bulk order.

Frequently Asked Questions

What game is the 180-gr Partition suited for? With .300 Winchester Short Magnum (WSM) behind a Partition bullet, it is built for deer-class game and similarly sized animals within the cartridge’s normal hunting range.

How many rounds come in a case? A case ships 10 boxes of 20, 200 rounds total.

How is the Partition different from a standard cup-and-core bullet? A dual-core design keeps a front and rear lead core separated by a solid partition wall, so the front expands while the rear retains weight for deep penetration.

Buy the Federal .300 Winchester Short Magnum (WSM) 180 gr Partition

A load you can trust round after round is worth more than a marginal ballistic edge, and this .300 Winchester Short Magnum (WSM) loading delivers exactly that. Pick up a case and put it through its paces before you need it. Order from our Lubbock, Texas gun shop and it ships fast to your door.