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300 Winchester Mag:
The .300 Winchester Magnum (also known as .300 Win Mag or 300WM) (7.62x67mm) is a popular, belted, bottlenecked magnum rifle cartridge that was introduced by Winchester Repeating Arms Company in 1963 as a member of the family of Winchester Magnum cartridges. The .300 Winchester Magnum is a magnum cartridge designed to fit in a standard length action. It is based on the .375 H&H Magnum, which has been blown out, shortened, and necked down to accept a .30 caliber (7.62 mm) bullet.
The .300 Winchester is extremely versatile and has been adopted by a wide range of users including hunters, target shooters, military units, and law enforcement departments. Hunters found the cartridge to be an effective all-around choice with bullet options ranging from the flatter shooting 165 grain to the harder hitting 200+ grain selections available from the factory. The .300 Win Mag remains the most popular .30 caliber magnum with American hunters, despite being surpassed in performance by the more powerful .300 Weatherby Magnum and the newer .300 Remington Ultra Magnum. It is a popular selection for hunting moose, elk, and bighorn sheep as it can deliver better long range performance with better bullet weight than most other .30 caliber cartridges. Military and law enforcement departments adopted the cartridge for long range sniping and marksmanship. As a testament to its accuracy, since its introduction it has gone on to win several 1,000-yard (910 m) competitions
Suggested Use:
- Deer (long range)
- Black Bear (long range)
- Sheep / Goat (long range)
- Moose
- Elk
- Buffalo / Bison
Performance:
The Winchesters factory ammunition for the .300 Winchester Magnum is capable of 3,260 feet per second (990 m/s) with the 150-grain (9.7 g) bullet and 3,000 ft/s (910 m/s) with the 180-grain (12 g) bullet. The maximum point blank range for the 150 gr (9.7 g) bullet is 318 yards (291 m) yards when zeroed at 270 yards (250 m). The maximum point blank range for the 180 gr (12 g) bullet is 300 yards when zeroed at 254 yards (232 m). The ability to zero the .300 Winchester Magnum and shoot without hold over to 300 yards (270 m) makes the cartridge one of the flatter shooting cartridges.
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