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The .243 Winchester (6×52mm) is a popular sporting rifle cartridge. Developed as a versatile short action cartridge to hunt both medium game and small game alike, it "took whitetail hunting by storm" [2] when introduced in 1955, and remains one of the most popular whitetail deer cartridges.
With heavier bullets the .240 Wby. Mag. makes for a good deer hunting cartridge, but it does tend to require a long (>23 inches (580 mm).) barrel in order to achieve peak performance. Performance for 100 grain bullet from utilizing a factory 26" test barrel and a Nosler Partition bullet)
In December 1955, Guns Magazine writer, H. Jay Erfurth in an article titled Two Varmint-Big Game Rifles discussing the .244 Remington and .243 Winchester wrote "the Winchester bullet of 100 grains is the better one for deer and medium game than the 90-grain Remington pointed soft-point, though the differences seem mostly splitting hairs." He ...
[citation needed] Most are made primarily for hunting species such as deer, kangaroo, and are generally based on the .303 British because of the post-war popularity of that round and of the cheap surplus Australian Lee–Enfield MkIII military rifles available. Many of these surplus rifles were re-barreled to .257 caliber, known as the 303-25.
Introduced by Remington at the 2023 SHOT Show. Straight-walled cartridge based on a blown-out .30-30 Winchester case and designed for deer hunting in U.S. states that require hunters with modern rifles to use that cartridge shape. [51].376 Steyr: 1999 [3] Austria & US 2 [54] R 9.5×60mm 2754 4211 0.375 60mm
The .243 Winchester Super Short Magnum or .243 WSSM is a rifle cartridge introduced in 2003. It uses a .300 WSM (Winchester Short Magnum) case shortened and necked down to accept a .243in/6mm diameter bullet, and is a high velocity round based on ballistics design philosophies that are intended to produce a high level of efficiency. [2]
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]
The round is optimised for bullets heavier than 100 grains to improve performance at long ranges - .243Win typically uses bullets lighter than 100 grains. [4] It is touted as being one of the most accurate long-range 6 mm rounds in the world that is designed for repeating rifles. [citation needed] The 6XC is now a CIP standardized case. [5]