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The .300 Winchester Magnum was introduced in 1963 by Winchester for use in the Model 70 rifle. Winchester developed the .300 Win Mag by taking the .338 Winchester Magnum, which was introduced in 1958, moving the shoulder forward by 4.0 millimetres (0.156 in) and lengthening it by 3.0 millimetres (0.120 in).
The best way to identify a pre-1964 Model 70 Winchester rifles is the serial number and the fore-end screw to secure the barrel to the stock. [6] Model 70 rifles with serial numbers below 700,000 [7] are the pre-1964 variety. The receivers of these Model 70s were machined from bar stock steel.
The .300 WSM also head-spaces off of the case shoulder, versus the older .300 Winchester Magnum's belted head space design. The advantage to this round is the ballistic performance is nearly identical to the .300 Winchester Magnum [ 2 ] in a lighter rifle with a shorter action burning 8 - 10% less gunpowder.
A couple of years later the .338 Winchester Magnum is released along with the Winchester Model 70 Alaskan model, just by when Alaska, the last hunting fronteer, was founded as a State. The .338 Win Mag was marketed as the ideal cartridge for big game hunting in Alaska, especially a bear cartridge that was also suitable for a large variety of ...
Based on the same principles as the Remington 700 series, the Model 710 uses a centerfire bolt-action cartridge, a 3-lug bolt system as opposed to the Remington 700's dual opposed locking lugs, with a 4-round detachable magazine (or a 3-round for the 7 mm Remington Magnum and the .300 Winchester Magnum). All can be equipped with a bipod and ...
The cartridge was used by American shooter Ben Comfort to win the 1000-yard Wimbledon Cup Match at Camp Perry in 1935, [2] and it was used again to win the international 1,000 yard competition in 1937. [3] Winchester chambered the Model 70 in .300 Holland & Holland Magnum in 1937. [2]
The typical 400-grain (26 g) bullet will have a sectional density of .338 for the .400 H&H Magnum vs. .330 for the .416 caliber cartridges. The .400 H&H Magnum shares the same caliber with several .400 cartridges from the turn of the 20th century such as the .400 Jeffery Nitro Express, the 405 Winchester and the series of .450/400 cartridges.
The introduction of Remington's 7 mm Magnum in 1962 almost immediately eclipsed the .264 Win. Mag., even though the 264 Win. Mag. uses an identical brass cartridge case (the neck diameter of either cartridge case can easily be modified to accept the others' bullets by the handloader), it never fully recovered from the competition of the ...