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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.
[145] [note 12] As the 5.56 mm round's velocity decreases, so does the number of fragments that it produces. [147] The 5.56 mm round does not normally fragment at distances beyond 200 meters or at velocities below 2500 ft/s, and its lethality becomes largely dependent on shot placement. [148]
For projectiles in unpowered flight, its velocity is highest at leaving the muzzle and drops off steadily because of air resistance.Projectiles traveling less than the speed of sound (about 340 m/s (1,100 ft/s) in dry air at sea level) are subsonic, while those traveling faster are supersonic and thus can travel a substantial distance and even hit a target before a nearby observer hears the ...
The 5.56mm round does not normally fragment at distances beyond 200 meters or at velocities below 2500 ft/s, and its lethality becomes largely dependent on shot placement. [ 44 ] [ 182 ] In March 1970, the U.S. recommended that all NATO forces adopt the 5.56×45mm cartridge. [ 89 ]
This list is not exhaustive, as such data is generally not tracked nor managed under any official procedure. For example, the 2002 Canadian Army sniper team that saw two soldiers set consecutive new records (Arron Perry at 2,310 m (2,526 yd) and Rob Furlong at 2,430 m (2,657 yd)), also made a number of kills at 1,500 m (1,600 yd) that are not counted here. [22]
As an example, the very common 9×19mm Parabellum standard military round is a 7.5 g (116 gr) bullet at velocities typically around 360 m/s (1,200 ft/s). Subsonic loads for 9×19mm Parabellum commonly use 9.5 g (147 gr) bullets at velocities of 300 m/s (980 ft/s).
The JVPC is designed to fire 5.56×30mm MINSAS round and have a muzzle velocity of 650 meters per second. [1] The 5.56×30mm ammunition used in JVPC is said to be superior to both FN 5.7×28mm and HK 4.6×30mm cartridges.
In a study conducted by the Army Marksmanship Unit, they found that at a distance of 300 yd (270 m), the M16 achieved a 24 in (610 mm) grouping, and the M4 achieved a 32 in (810 mm) grouping, which dropped to 12 in (300 mm) and 18 in (460 mm) respectively when using match grade ammunition. [95]