Guessing that may have had a lot to do with fuel and ammo consumption reducing your all-up weight. Lighter chopper means more weathercocking.
Good point.. Hadn't thought of that. Does anyone know if the in-game Apache fuel consumption rate is modeled after the real thing? (I don't have any idea what that rate is by the way..)
Don't know how reliable the source: HERE..but it says:
"Powered by two General Electric gas turbine engines rated at 1890 shaft horsepower each, the Apache�s maximum gross weight is 17,650 pounds which allows for a cruise airspeed of 145 miles per hour and a flight endurance of over three hours."