[itgoesboom]

Anyone know the B.C. of M855 projectile?

Thanks.

[farmer7]

Sorry couldn't find the B.C. But perhaps this may help???

5.56 NATO Ball Ammunition Ballistic Comparison
based on Aberdeen Proving Ground Data
velocity (fps) trajectory (in.) drop (inches) drift (inches)*
range M193 M855 M193 M855 M193 M855 M193 M855
(meters)
0 3,200 3,100 -2.5 -2.5 0.0 0.0 0.0 0.0
100 2,774 2,751 +2.8 +4.4 -2.2 -2.3 1.3 1.1
200 2,374 2,420 +2.7 +5.8 -9.9 -10.2 5.8 4.9
300 2,012 2,115 -4.9 0.0 -25.1 -25.3 14.2 11.8
400 1,680 1,833 -23.0 -15.0 -50.8 -49.5 27.6 22.4
500 1,373 1,569 -56.2 -42.9 -91.6 -86.7 47.5 38.0
600 1,106 1,323 -113.1 -88.2 -156.1 -141.3 76.4 59.5
700 995 1,106 -206.8 -156.1 -257.3 -220.9 113.5 88.4
800 927 1,010 -339.9 -267.7 -398.0 -339.2 156.1 124.9

* Drift for 10 mph wind.
M193 Ball ammunition fired in M16A1 rifle with 250 meter battle sight zero.
M855 Ball ammunition fired in M16A2 rifle with 300 meter battle sight zero.

[agd1953]

M855: 62gr FMJBT (BC = .304), penetrator tip, NATO round used in M16A2

found this on the web:)

[BillMcCall]

"Everything you ever wanted to know about .223 and 5.56 ammo"

http://www.ammo-oracle.com