Re: Ballistic software
Remember that there is a difference between drop and path. Drop, irrespective of shot direction, inclination or declination, is drop of the bullet due to gravity. For an average .308 Win., drop at 100 yards is around 2.5". In other words, for the amount of time that a .308 takes to reach the target, gravity will have pulled it down 2.5". Path, on the other hand, is the path that the bullet takes relative to the line of sight. So in order to get a bullet to hit at the point of aim at 100 yards, the shooter is going to have to shoot slightly high. The path of the bullet will be positive when it's above the line of sight, zero as it crosses the line of sight (i.e., what you are aiming at) and then become negative below the line of sight.
Your ballistics program should show you both drop (in positive numbers) and path (positive before your zero, negative after.)