If they were indeed trying to take out a vehicle I wouldn't be a bit suprised about a "light fifty" being used. Why would you not think the .308 would be used in Iraq? They seem to be quite a standard sniper rifle, especially the M24. Again I've no front line experience, but I know my weapons pretty well. With the exception when you start talking different loads, and a 450 grain bullet. You lost me there :)
