- Joined
- May 26, 2010
- Messages
- 31,122
- Likes
- 41,041
Never underestimate a round, only because it's .22 diameter bullet.
Graphic Pictures :
This is work of NATO 5.56mm which are lighter than OFB 5.56mm ammo
http://lh6.ggpht.com/_vJcKa90vLkg/S2RTg_KWWCI/AAAAAAAAHyI/JkspbO3VNfU/s1024/image006.jpg
http://www.gunslot.com/files/gunslot/images/75688.jpg
sniper_shot2_292.jpg Photo by IkeMcgowan | Photobucket
===============
5.56mm has many variation, IA use 64gr 5.56mm with Muzzle velocity of 2900fps vs NATO SS109 62gn at 2900fps, With 1B1`s 18inch barrel and with twist rate 1/7, Its is killing even at 650ms range, 600ms is more than sufficient for AR range as most battle occur under 300ms ..
About newer 6.5mm or 6.8mm and their marketing advertise as it is heavier and faster yet at affordable recoil, Then its just advertisement for marketing, New Generation 5.56mm have similar or better preform ace, I have posted a research in last page conducted by US army with other caliber rounds as you mentioned ..
Graphic Pictures :
This is work of NATO 5.56mm which are lighter than OFB 5.56mm ammo
http://lh6.ggpht.com/_vJcKa90vLkg/S2RTg_KWWCI/AAAAAAAAHyI/JkspbO3VNfU/s1024/image006.jpg
http://www.gunslot.com/files/gunslot/images/75688.jpg
sniper_shot2_292.jpg Photo by IkeMcgowan | Photobucket
===============
5.56mm has many variation, IA use 64gr 5.56mm with Muzzle velocity of 2900fps vs NATO SS109 62gn at 2900fps, With 1B1`s 18inch barrel and with twist rate 1/7, Its is killing even at 650ms range, 600ms is more than sufficient for AR range as most battle occur under 300ms ..
About newer 6.5mm or 6.8mm and their marketing advertise as it is heavier and faster yet at affordable recoil, Then its just advertisement for marketing, New Generation 5.56mm have similar or better preform ace, I have posted a research in last page conducted by US army with other caliber rounds as you mentioned ..
"The military must change the caliber and cartridge of the guns it gives infantry soldiers. Stoner's little 5.56-mm cartridge was ideal for softening the recoil of World War II infantry calibers in order to allow fully automatic fire. But today's cartridge is simply too small for modern combat. Its lack of mass limits its range to less than 400 meters. The optimum caliber for tomorrow's rifle is between 6.5 and 7 millimeters."
Source: theatlantic.com/magazine/archive/2015/01/gun-trouble/383508/