This is very interesting stuff, thanks for the good responses even if I don’t understand some of it (physics was not my forte in college).

If I know anyone needing a PhD thesis in aerodynamic engineering, I will revert him or her to this post.

One question I have is from a post above. Someone was saying that a bullet drops faster in cold weather versus warm weather due to the density of the cold air. Why would the air temperature affect this if gravity is pushing down at a constant? An example would help to clarify this if at all possible.