it has indefinite range as long as it does not hit the terrain i found.
and you can click outside of your indicated range to cast the ability, removing the skill factor to it.
for me, best fix would be fix the double shot, make the indicated range 20 (the shell still goes on indefinitely), and not be able to cast it by clicking outside of the indicated range, so that you can't snipe vehicles from so far away so easily.
Got told my Pershing was ready for deployment. Clicked it and deployed it, no pershing, fuel and mp gone. American economy still the thief's guild it seems
its a bug aleady announced by relic. you mustve not had enough free pop.