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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.
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 ] With the development of the M16A2, the new 62-grain M855 cartridge was adopted in 1983.
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 ...
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]
Note **: The horizontal range is the distance traveled by a bullet, fired from the rifle at a height of 1.6 meters and 0° elevation until the bullet hits the ground. [ 169 ] Note ***: The lethal range is the maximum range of a small-arms projectile, while still maintaining the minimum energy required to put a man out of action, which is ...
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. [23]
The complete Six-Pak system weighed 85 pounds (38.5 kg) with 1,000 rounds of ammunition, comparable in weight to some heavy machine guns. The basic gun in the Six-Pak weighed 27 pounds, or 12.2 kg. The system could be carried by a team of two soldiers and mounted either to an M122 tripod or a vehicle's pintle mount. The overall length is 104 cm ...
From a 16 in (410 mm) barrel, a 125 gr (8.1 g) .300 BLK round has a lower velocity and similar bullet drop and drift at shorter distances. However, it has the same amount of energy at 700 meters that the M855 has at 500 meters. In terms of hit probability, the Blackout has an effective range of 460 meters.