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This new .270 cartridge was the third commercial .270 ever produced, and the first one in 60 years. [1] The 270 WSM is an improvement over the older 270 Winchester providing higher velocity with bullets of the same weight, and thus a flatter trajectory and more energy. Velocities tend to be about 250 ft/s (76 m/s) faster, in a cartridge that is ...
The Hornady Superformance Ammunition drives a Hornady 180 gr (12 g) Interbond or SST bullet at 3,040 ft/s (930 m/s) and the 150 gr (9.7 g) SST bullets at 3,310 ft/s (1,010 m/s). The.300 Ruger Compact Magnum's greater case capacity, and the "short fat" cartridge efficiency lead to increases in the neighborhood of 150 fps over the H&H cartridge ...
However, bullet construction is more important than bullet weight in order to shoot the heavier game. Recent introductions of low-drag bullets suited to the .270 Winchester such as the Nosler Accubond Long-Range, Hornady ELD-X and Matrix long-range bullets are promoting renewed interest in the cartridge among long-range hunters. [citation needed]
Some soft point bullets have a more aerodynamic contour like these spitzer boat-tail bullets. A soft-point bullet (SP), also known as a soft-nosed bullet, is a jacketed expanding bullet with a soft metal core enclosed by a stronger metal jacket left open at the forward tip. A soft-point bullet is intended to expand upon striking flesh to cause ...
Particularly, the .270 Wby Mag the result of necked down to accommodate the .277 in bullets and bringing down the case to fit a standard length action. [3] Like most Weatherby cartridges, the .270 Weatherby was standardized by the Small Arms and Ammunitions Manufacturers Institute in 1994, and it has a SAAMI maximum pressure limit of 62,500 psi.
Miller twist rule is a mathematical formula derived by American physical chemist and historian of science Donald G. Miller (1927-2012) to determine the rate of twist to apply to a given bullet to provide optimum stability using a rifled barrel. [1]
A spitzer bullet (from German: Spitzgeschoss, "point shot") is a munitions term, primarily regarding fully-powered and intermediate small-arms ammunition, describing bullets featuring an aerodynamically pointed nose shape, called a spire point, sometimes combined with a tapered base, called a boat tail (then a spitzer boat-tail bullet), in order to reduce drag and obtain a lower drag ...
At present Remington, Winchester, HSM, and DoubleTap Ammunition produce ammunition for this cartridge. Manufacturers offer a 140 gr (9.1 g) bullet at 3,030 ft/s (920 m/s). This ammunition has a maximum point blank range of 300 yd (270 m) when sighted in at 250 yd (230 m). Some ammunition offers premium 140 gr (9.1 g) Nosler Partition and 125 gr ...