It is said that the WGr21 rockets basically have the same trajectory as the MK108.
So I thought to myself "hmmm.. I think this means that I can just fire up the ol' .target command, set it to about 1500 yards, and see where the Mk108 lands. So I'll have a reference point!"
...
Unfortunately, the MK108 can't reach 1500 yards to record where on the bull's eye it landed

...
So, on the second attempt, I tried making a terrain with the terrain editor, that has a B-17 object floating around at about 15k, an air-spawn about 8 miles away at 20k. "No problem, looks easy enough.. I'll set the B-17s as destroyable objects, so if my rockets hit, they'll register hits. It's different from trying to hit a moving B-17 for sure, but at least I'll get the feeling for on how much lead I have to put to aim properly. "
Of course, the terrain didn't register. It kept CTD.
Ah... phooey!
ps) any expert map-terrain makers out there know if my second notion is possible?