Great stuff Beach, as always. I think using the non-FCR Longbow is perhaps more rewarding than with an all Seeing RADAR attached to your bird. I was going to comment about your chain gun not being boresighted, but you've already addressed it in the above statement. Having spent much time in and around VBS2 and VBS3, made by Bohemia Interactive as well and really the same game engine, I am certain they are referring to meters versus miles. Everything on their map is scaled to meters, since we're the only knucklehead country not using metric measurements, outside the military. Finally, I have to say the explosions were very spot on with real life. I thought I was watching a real ITADDS video from an actual Apache in theater. Now, admittedly, no explosion is ever the same, it was just the way it hit, brewed up and popped that was so very reminiscent of the explosions I saw. As always, thanks for sharing and taking time to always reply to any questions posted. Watching and reading your AAR's may just convince me to buy Arrowhead again on Steam, just to play this great evolving add on.
Yeah, I think the 2.0 is KM or 2000 meters. It would stand to reason. A more experienced player would probably use the Hellfires from afar, then move closer in and clean up with the gun at less than 1000 meters, but I was pretty gun shy about getting blasted out of the sky. Particularly when you are flying as the CP/G since ordering a retreat takes some time. If you are flying as the pilot, you can just dump the collective and settle behind some cover..but trying to manage the AI pilot is pretty frustrating.
The explosions credit I have to give to Blastcore 1.2 Mod. The explosions, fire, and smoke effects they add are fantastic:
LINK! 
Thanks for the kind words. It makes the effort to share this stuff worthwhile. Hope you get some stick time over there in Korea.. I have fond memories of living there.
BeachAV8R
