Search results
Results From The WOW.Com Content Network
It appears that this round can drastically improve the performance of any AR-15 weapon chambered to .223/5.56 mm. Superior accuracy, wounding capacity, stopping power and range have made this the preferred round of many special forces operators, and highly desirable as a replacement for the older, Belgian-designed 5.56×45mm SS109/M855 NATO round.
Stopping power is the ability of a weapon – typically a ranged weapon such as a firearm – to cause a target (human or animal) to be incapacitated or immobilized. Stopping power contrasts with lethality in that it pertains only to a weapon's ability to make the target cease action, regardless of whether or not death ultimately occurs.
The .223 Remington (designated 223 Remington by SAAMI [4] and 223 Rem. by the C.I.P. [5]) is a rimless, bottlenecked, centerfire intermediate cartridge.It was developed in 1957 by Remington Arms and Fairchild Industries for the U.S. Continental Army Command of the United States Army as part of a project to create a small-caliber, high-velocity firearm.
The AR-15 rifle usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Remington, since this can result in damage to the rifle or injury to the shooter. [1]
The major dimensional difference between the chambers that fire the .223 Remington and the 5.56×45mm NATO is the longer and larger-diameter "freebore" [3] in the 5.56 chamber (0.0566 in (1.44 mm) vs 0.0250 in (0.64 mm) length, 0.2265 in (5.75 mm) vs 0.2240 in (5.69 mm) diameter). Freebore is a short and smooth section of the barrel that is ...
Similar, but not interchangeable with .223 Rem. 5.6mm Gw Pat 90: 1987 Switzerland R 5.56×45mm 3168 1243 0.622 28.5 0.224 45mm Swiss military version of the 5.56×45mm NATO / 223 Remington. For SIG SG 550 and variants. 5.7×28mm: 1990 Belgium 1 [7] R 5.7×28mm 2800 400 [8] 0.286 13 0.224 28mm Bottlenecked high velocity PDW cartridge designed by ...
United States Army Special Forces personnel filed battlefield reports lavishly praising the AR-15 and the stopping power of the 5.56 mm cartridge, and pressed for its adoption. [44] The damage caused by the 5.56 mm bullet was originally believed to be caused by "tumbling" due to the slow 1 turn in 14-inch (360 mm) rifling twist rate. [67]
The Taylor KO factor multiplies bullet mass (measured in grains) by muzzle velocity (measured in feet per second) by bullet diameter (measured in inches) and then divides the product by 7,000, converting the value from grains to pounds and giving a numerical value from 0 to ~150 for normal hunting cartridges.