300 Win Magnum Ammo

History of .300 Winchester Magnum Ammunition
By Sam Jacobs

The .300 Winchester Magnum is a descendant of the legendary .375 H&H cartridge that gained a reputation in Africa of being able to handle any game on that continent. Similarly, the .300 Win Mag is known to be capable of taking any North American game. With a velocity advantage over the .30-06 approaching 300 feet per second in most cases, the .300 Win Mag definitely lives up to its name.

The .300 Win Mag has seen renewed popularity in the first decade of the 21st Century as the US Army has begun converting its .308 Winchester sniper rifles to the .300 WM cartridge, which is capable of engaging human-sized targets out to 1200 meters. This is a 50% improvement over the .308 Winchester, itself a very effective sniper rifle cartridge.

Generally chambered in bolt action rifles such as the Remington 700 and Winchester Model 70 only, the .300 Win Mag has nonetheless been chambered in semi autos such as the Browning BAR and lever actions including the Browning BLR.