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The 25 WSSM has similar ballistics to the .25-06 but in a much shorter case. It is a necked-up version of the .243 WSSM, [1] which is in turn a shortened .300 WSM (Winchester Short Magnum). The WSSM cartridges are based on ballistics design philosophies that are intended to produce a high level of efficiency. [2]
For example, if we compare the .25 WSSM to the .25-06 Remington, we find that the .25-06 requires a .30-06 length action, commonly called a standard or long action. The .25 WSSM case which is almost a full inch shorter, can make use of an existing short action such as used by the 5.56 NATO and .223 Remington family of cartridges. Some ...
From left to right: .223 WSSM, .243 WSSM, .25 WSSM, .270 WSM, 7 mm WSM, .300 WSM, .325 WSM. Winchester Short Magnum , or WSM , refers to a family of rebated bottlenecked centerfire short magnum cartridges developed in the early 2000s by the U.S. Repeating Arms Company , the maker of Winchester rifles and one of the oldest firearms manufacturers ...
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 cartridges. The .325 WSM was intended for the hunting of medium and large bodied thin skinned dangerous and non-dangerous big game animals of Africa, Asia ...
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]
Cost is another factor limiting popularity. Ammunition prices are higher than those of the 7mm Remington Magnum and the .280 Remington, [4] both of which have similar performance to the 7mm WSM, with the 280 Rem having slightly less muzzle energy and the 7mm Rem Mag being roughly equal. [5]
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The head of a brass case can be work-hardened to withstand the high pressures, and allow for manipulation via extraction and ejection without rupturing. The neck and body portion of a brass case is easily annealed to make the case ductile enough to allow reshaping so that it can be handloaded many times, and fire forming can help accurize the ...