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The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. [2] The cartridge is short enough to function in standard-length long actions with a brass length of 2.549" or 64.74mm and an overall length of about 3.295".
The 270 Winchester Short Magnum or 270 WSM is a short magnum cartridge created by necking down the .300 Winchester Short Magnum and fitting it with a .277 caliber bullet. The correct name for the cartridge, as listed by the Sporting Arms and Ammunition Manufacturers' Institute ( SAAMI ), is 270 WSM, without a decimal point. [ 3 ]
Federal significantly expanded the number of .224 Valkyrie loads it offers. The Varmint and Predator load hold 60-grain Hornady V-MAX bullets. The 80.5-grain Gold Medal Berger Match was designed for long-range target shooting. The 78-grain Barnes TSX copper hollow point is a hunting round for large game such as deer. [17]
The cartridge was initially commercially loaded to drive a 130 grain (8.4 gram) bullet at approximately 960 m/s (3,140 ft/s), later reduced to 930 m/s (3,060 ft/s), demonstrating a high performance at the time of its introduction while being marketed as a suitable cartridge for big game shooting in the 270 to 460 metres (300 to 500 yd) range.
In 1925, Winchester introduced the .270 Winchester, previously known as the .270 WCF, based on the 30-06 Springfield case necked down to .277" (6.8 mm). Although the .270 Winchester was not an instant success, within a few decades it became one of the most popular big game hunting cartridges for mid sized game worldwide, because of its relatively mild recoil and flat trajectory within ...
Bullets in the 110- to 120-grain range are suitable for small game and varmints (handloads with 110s can nearly achieve 3000 ft/s); 120- to 154-grain range for deer; and 154 to 168 gr range are adequate for larger game at closer ranges. [13] "The 7-30 Waters has proven its capabilities in the field on big game weighing up to 300 pounds at woods ...
The federal ban on armor-piercing pistol ammunition uses only the composition of the bullet's core to determine legality. [5] However, many individual states have legislation restricting various kinds of coating materials, for example:
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 ...