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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.
As Ruger intended the cartridge to be chambered in short bolt-action rifles, [3] they trimmed the .375 Ruger parent case to 2.015 in (51.2 mm) to ensure a comparable cartridge overall length to the .308 Winchester. Unlike the rebated Winchester Short Magnum cartridges, the Ruger Compact Magnums share the same diameter from case head to body.
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)
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]
He went on to write "With the 90 grain load, the 244 is a good deer cartridge and certainly effective on antelope and any lighter game." [ 9 ] Ultimately 90 grain hunting bullets such as the soft pointed Spitzer used by Remington are known to be well suited to medium-sized big game and the 722 to be an inherently accurate rifle.
The .325 Winchester Short Magnum, commonly known as the 325 WSM, is an 8mm caliber rebated rim bottlenecked centerfire short magnum medium bore cartridge. The cartridge was introduced by Winchester Ammunition in 2005. [1] [2] Introduced at the 2005 Shot Show in Las Vegas, NV, it is the largest member of the Winchester Short Magnum family of ...
The cartridge case length is 53.34 mm. The bullet diameter is .308 in (7.82 mm), which is common to all U.S. .30 caliber cartridges. The principle at work in the short magnum cartridge is the fitting of larger volumes of powder in closer proximity to the primer's flash hole, resulting in more-uniform ignition.