This looks interesting

[paincave_2000]

Might have to get one.
http://kitup.military.com/2012/03/hex-f ... ment-40581

 

[FULLDRAWXX75]

Makes perfect sense, start adding up all the variables that can effect a bullets flight/performance from the drop of the hammer.
There are a lot of them, start working on eliminating those causes and you get something like this................

FDXX75

 

[m411b]

Interesting! Wonder how much green they are going for?

EDIT: $479

Guaranteed sub-MOA with M193 military ammo..