Glock 20 @ claimed 352 yards
http://www.youtube.com/watch?v=mKFSN8Z9RnI
That's roughly 160-ish inches of drop at that distance (presuming some things about that round like ballistic coefficient, etc... that I can't seem to find because there's absolutely no data out there on long-range shooting with a .10mm PMC hollow point that I can find).
So just aim 13 feet higher than the target and no problems right?