Get in the twin 5inch offline. Figure out what compass heading your a pointing your guns by default on the map. Lets say east.
.target 10000 90 27
Now goto full zoom and see if you can calc the elevation to drop the round into the center of the target that's about 1000ft off the water. Then try (.target 10000 90 45). 4k is pushing it for most players to lead anything. 3k is getting into effective player lead range but, in many cases the bombs have been away since 6k transitioned into 5k.