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The .300 Winchester Magnum cartridge is effective on dangerous game such as bear. Both black bears [21] and grizzly bears [22] are hunted using the cartridge. The .300 Winchester Magnum is a lighter cartridge than typically necessary for the largest bears; loaded with heavier bullets, hunters have had success with the cartridge against these ...
The ability of the .300 Winchester Magnum chambering to obtain fairly high muzzle velocities, combined with relatively heavy and long very-low-drag bullets, significantly enhance the hit probability at longer ranges and hence the effective range compared to the 7.62×51mm NATO cartridge. The AWM chambered for the .300 is fitted with a fluted ...
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.
The .338-378 Weatherby Magnum is based on the .338-378 KT, a wildcat cartridge created by Elmer Keith and R.W. "Bob" Thomson in 1966. [2] The KT is based on the .378 Weatherby Magnum cartridge but is shorter by 1/4" and necked down to a .338 caliber bullet. [ 3 ]
The .378 Weatherby Magnum was designed by Roy Weatherby in 1953. [ 3 ] [ 4 ] Although inspired by the .416 Rigby , it is an original belted magnum design with no parent case. [ 5 ] The cartridge features a high powder capacity relative to its bore size, and can hold upwards of 7.13 g (120 gr ) of powder.
Left to right: .308 Win, .30-06, .300 Weatherby, .300 ICL Grizzly, .300 RUM .300 ICL Grizzly' is based on the .300 H&H Magnum , and indeed the two are so similar that .300 H&H ammunition can safely be fired through a rifle chambered in .300 ICL Grizzly, as can the ammunition of another .300 H&H-based cartridge, the .300 Weatherby Magnum. [ 25 ]
.264 Winchester Magnum (1959): .264 in (6.7 mm) bullet.300 Winchester Magnum (1963): .308 in (7.8 mm) bullet; With the exception of the .264 Win Mag, all of these cartridges are still widely used and among the most popular big game cartridges around the world. The .458 Win Mag has become the #1 cartridge for dangerous game in Africa, as well as ...
Winchester claims a muzzle velocity (MV) of 3,225 ft/s with a 140 grain bullet for their 7mm WSM cartridge; the claimed muzzle energy (ME) is 3,233 ft. lbs. With a 160 grain bullet the Winchester figures are 2990 ft/s and 3176 ft. lbs. at the muzzle. The lighter, shorter 7mm bullets are preferred in these short case magnums. [2]