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Performance for 100 grain bullet from utilizing a factory 26" test barrel and a Nosler Partition bullet) Muzzle 100 yd 200 yd 300 yd 400 yd 500 yd Trajectory 2.8: 3.5: 0
The .257 Weatherby Magnum is capable of firing a 115 gr (7.5 g) Nosler Ballistic Tip bullet at 3,400 ft/s (1,036 m/s) generating 2,952 ft⋅lbf (4,002 J) of energy [3] which is comparable to factory loadings of the .30-06 Springfield and the .35 Whelen in terms of energy.
The .30 Nosler shares the same overall cartridge length 84.8 mm (3.340 in) as the .26 Nosler and the .28 Nosler which allows it to be chambered in standard-length action firearms. Four of Nosler's Cartridges, the .26 Nosler, .28 Nosler, .30 Nosler, and .33 Nosler, are based on the same .300 Remington Ultra Magnum [6] parent case.
Weatherby no longer loads the 250gr. round-nose cartridge pictured but continues to load the 250 gr. Spire Point and 250 gr. Nosler Partition. Weatherby has also expanded their factory loads including Nosler Ballistic-tip and Barnes TSX bullets complementing the powerful cartridge. [ 7 ]
The portion of the bullet behind the partition has the structural integrity of a full metal jacket bullet, but the expanded forward jacket leaves a larger wound channel. Bullets were originally manufactured for personal use, using hand made, lathe-turned jackets. In 1948 Nosler began to sell the partition bullets commercially, forming Nosler ...
A guide to the recoil from the cartridge, and an indicator of bullet penetration potential. The .30-06 Springfield (at 2.064 lbf-s) is considered the upper limit for tolerable recoil for inexperienced rifle shooters. [2] Chg: Propellant charge, in grains; Dia: Bullet diameter, in inches; BC: Ballistic coefficient, G1 model; L: Case length (mm)
Nosler Partition or even the 250gr partition the .338-06 can handle the largest North America game including moose and brown bear. Rifles chambered in .338-06 need not be as heavy as a .338 Winchester Magnum or other .338 magnums; therefore, .338-06 chambered rifles are desirable for mountain hunting or where excessive weight is an issue.
While poor penetration due to bullet construction was not limited to the .460 Weatherby Magnum, the issue was more magnified in this cartridge than others due to the additional stress imposed on the bullet by the higher velocity of the cartridge as is the case with the .375 H&H Magnum cartridge firing the 300 gr (19 g) solids at 2,530 ft/s (770 ...