From Wiki:
Almost all rounds have a ballistic coefficient of less than 1.0, but large rounds like the 50 BMG can exceed this normal BC. The higher the number, the less drag the projectile will experience. But a higher ballistic coefficient doesn't necessarily mean it is a better bullet.
My point was that even using highly optimistic numbers, a glider is not much value as a missile.
Please feel free to do your own homework and post. I am not here to be the answer guy to everyones questions.
The BC is a comparison of a bullet to a model bullet, the model is a 1.0.
G1 us a model based on a 1 caliber diameter, 1 caliber bearing surface and a two caliber tangent ogive (pronounced O Gee).
G7 is a boatailed bullet more like modern designs.
Better yet is drag coefficient, a purely mathematical model based in modern ballistic formulae.
Anyway, a missile is not ballistic in the bullet sense, as it is powered throughout its trajectory until some point perhaps....