Thanks Wolfhound. I can't see your illistration on this computer. Some things get blocked. [:@] But, I think sabotloader has fallen off of his 4-wheelerand hit in the head with a fryingpan too many times and forgot what the marine told him.

SL, take that new fancy Leupold rangefinder you got and turn on the incline compensator thingy-ma-bobber. Get up on top of one of the skyscrapers over there in Moscow and rangefind the ground straight down. What does it say? Should be ZERO or close to it. Yes, gravity is gravity, but in this case it would be pulling the bullet STRAIGHT down directly in the path of the bullet, therefore, no drop in the trajectory.

You would have to aim lower than you would if you were on flat ground. You are right though, same effect if you were shooting straight up.