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Find the .300 Win Mag ammo you’re looking for right here at, the site dedicated to firearms, hunting, shooting and accessories. We aim to provide you with all the necessary information you need to make an informed .300 Win Mag ammo purchase. Explore the history, ballistics, and technical specifications of .300 Win Mag ammo, then browse the listings of our trusted sellers to make your purchase.
.300 Win Mag ammo History
.300 Win Mag ammo, or .300 Winchester Magnum ammo, was created by the Winchester Repeating Arms company in 1963 and is used by the military, law enforcement units. .300 Winchester Magnum ammo is also one of the most popular rounds for hunters. Those who hunt for moose, elk, and other members of the ungulate family tend to be fond of this ammo.
.300 Win Mag ammo Ballistics & Specifications.
.300 Win Mag ammo delivers better range than many .30 caliber (7.62 mm) cartridges, making it advantageous in long-distance hunting. The size of .300 Win Mag ammo is compatible with popular rifle models, such as the Remington Model 700 and Winchester Model 70.

.300 Win Mag ammo is .308 inches (7.8mm) in diameter. The neck is .339 inches, (8.6 mm) in diameter; the base is .532 inches (13.5mm) in diameter. The shoulder is .489 inches (12.4mm) in diameter, and the case 2.62 inches (67 mm) long. The parent cartridge is the .375 H&H Magnum, and the rifling twist is 1:10.
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