ok I buy that, it seems to be a good candidate for my missing factor...
..so as the slug drops as a result of gravity it we get an aerodynamic lift component via an angle of attack, so it effectively becomes a symmetrical airfoil. I was imagining the projectile was bullet-like plus fins (for...
This article in the Economist magazine sparked a physics debate in my pub, on the topic of straight-line trajectories:
My protagonist was arguing that anybody in a gravitational field will be subject to downward forces, no matter how fast it was going horizontally. His beermat calculation...