Okay, I haven't tested it yet (and can't for another hour or so), but I think I found weapon range in PROJECTILES.xml. Try changing the Projectile_Max_Flight_Distance to double or triple (so you can really see the difference) for one type of projectile, build only units with that projectile weapon type, and see if it works. If it does, just change that distance to whatever you want. Hmmm...just had a funny idea. What if we managed to increase the firing range so that units could choot at each other from opposite edges of the map? That would be interesting to watch...I'll call it the insanity mod...and I'm going to work on it right away...