Rifle cartridge reference
.300 Win Mag Ammunition
Also known as .300 Winchester Magnum.
A hard-hitting belted magnum for large game and long shots — favored by hunters and some military precision rifles alike.
At a glance
Common firearms in .300 Win Mag
Frequently asked
How much does .300 Win Mag cost per round?+
.300 Win Mag typically runs about $1.50–$2.80 per round online, roughly $2,150 for a 1,000-round case at the middle of that range (as of 2026). Bulk cases lower the per-round cost, while premium defensive or match loads run higher. Prices move with supply, so track your own cost per round over time.
What is .300 Win Mag used for?+
.300 Win Mag is most commonly used for long-range, big-game hunting. A hard-hitting belted magnum for large game and long shots — favored by hunters and some military precision rifles alike.
What firearms are chambered in .300 Win Mag?+
Popular options include Remington 700, Winchester Model 70, Christensen Ridgeline. It falls in the rifle category.
How much does .300 Win Mag recoil, and is it available?+
.300 Win Mag has heavy recoil for its class, and availability is currently "common." You'll find it at most retailers and online.
Track your .300 Win Mag the smart way
Rangium logs your .300 Win Mag by the round: stock on hand, cost per round and spend over time, with low-stock warnings when you run short. Ask Vanta how much you have left, and list or find .300 Win Mag firearms in the marketplace.