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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]
The term express was first applied to hunting rifles and ammunition beginning in the mid-19th century, to indicate a rifle or ammunition capable of higher than typical velocities. The early express cartridges used a heavy charge of black powder to propel a lightweight, often hollow point bullet , at high velocities to maximize point blank range .
Obsolete. Smallest round ever manufactured. [3] 4.6×30mm: 2000 Germany H 4.6×30mm 2410 400 0.332 0.183 30mm Bottlenecked high velocity PDW cartridge designed by Heckler & Koch in conjunction with the Heckler & Koch MP7 personal defense weapon. 5 mm Remington Rimfire Magnum: 1970 [3] US 0 [3] R 5×26mm 2100 [3] 327 0.311 0.205 [3] 26mm ...
The .700 Nitro Express develops an approximate average of 8,900 foot-pounds force (12,100 J) of muzzle energy with a 1,000 gr (65 g) bullet at 2,000 ft/s (610 m/s). Handloaders can push the cartridge to generate as much as 15,000 foot-pounds (20,000 J) of energy in a modern bolt action, by using a 1,000 gr (65 g) bullet fired at 2,600 ft/s (792 ...
[10] [11] Actual performance tests showed the cartridge achieved 4100 fps with a 70 grain bullet, 3800 fps with an 85 grain bullet, and 3500 fps with a 95 grain projectile. [10] The bullet is known to cause excessive wear to barrels with the barrel maintaining accuracy for about 1500 rounds.
The .40 S&W (10.2×22mm) is a rimless pistol cartridge developed jointly by American firearms manufacturers Smith & Wesson and Winchester in 1990. [3] The .40 S&W was developed as a law enforcement cartridge designed to duplicate performance of the Federal Bureau of Investigation's (FBI) reduced-velocity 10mm Auto cartridge which could be retrofitted into medium-frame (9 mm size) semi ...
Speer Gold Dot 124gr 9mm+P in SIG P226 magazines. Overpressure ammunition, commonly designated as +P or +P+ (pronounced Plus-P or Plus-P-Plus), is small arms ammunition that has been loaded to produce a higher internal pressure when fired than is standard for ammunition of its caliber (see internal ballistics), but less than the pressures generated by a proof round.
These new "High Velocity" loadings offered a nearly 300 ft/s (91 m/s) increase in velocity over the original 1,050 ft/s (320 m/s) .22 LR load. [citation needed] This increase in power of the smaller round, coupled with its cheaper price and sheer number of rifles already owned in .22 LR, effectively killed the .22 WRF. [citation needed]