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]

2016年6月10日 · The incredibly defined shoulder of the .243 WSSM is no longer the hindrance it presented to a bolt action platform. With cycling problems solved, it provides one of the highest velocity options in the AR-15 platform: pushing a factory 55gr bullet a screaming 4,050+ fps muzzle velocity with a mid to long range effectiveness like never before.

The latest cartridge to be used in benchrest competition is the .243 Winchester Super Short Magnum which although designed primarily as a varmint to deer cartridge, has shown merit on the 600 yard range. The .243WSSM was released, along with the .223WSSM in 2003.

2016年6月9日 · With cycling problems solved, it provides one of the highest velocity options in the AR-15 platform: pushing a factory 55gr bullet a screaming 4,050+ fps muzzle velocity with a mid to long range...

The new .243 WSSM, the subject of this article, is one of the original WSSM calibers. Winchester offers two deer, antelope, and black bear loads for the .243 WSSM. One of these is a Supreme load using a moly coated 95 grain Ballistic Silvertip bullet (BC .379, SD .230) at a muzzle velocity (MV) of 3250 fps and muzzle energy (ME) of 2258 ft. lbs.

2023年11月18日 · The .243 Winchester cartridge is slower than the .243 WSSM cartridge by 143 feet per second. Muzzle energy is the kinetic energy of a bullet as at the moment it escapes the barrel of a gun. It is measured in foot-pounds and is used to determine the destructive potential of …

2011年1月4日 · You've got to figure that, based on case volume, whatever the .243 Win. will do at 200 yards, this new .243 WSSM will do at 300--in all three loadings. Three action lengths for the Browning A-Bolt, from top: standard, short and the new super short.

2021年4月30日 · The .243 WSSM is available in factory and custom bolt action rifles but the highlight of this caliber/cartridge combination is the Olympic Arms offering complete AR-15s and uppers in this caliber and being able to feed all Winchester’s factory ammunition like the 95-grain SBST (eight rounds of .243 WSSM fit in a 20rd .223 magazine).

The .243 Winchester Short Magnum (WSSM) is a powerful and highly accurate centerfire rifle cartridge based on the .300 WSM case necked down to accept .243 caliber (6mm) bullets.

2023年1月15日 · The .243 Winchester Super Short Magnum, or .243 WSSM, is a .243in caliber sporting rifle cartridge introduced in 2003. It is based on a shortened and necked down .300 Winchester Short Magnum. The .243 WSSM is one of the …