I would guess that, somewhat counter to one's intuition, the probability of a collision between a bullet in flight and a rain drop is pretty low, even in a heavy rain.
On the other hand, rain usually means a high relative humidity level, which directly affects the density of the medium through which the bullet is traveling, which would be properly modelled by changing the drag coefficient in a ballistic program. However, my guess is that the effect in terms of printing on a downrange target is low enough to be entirely masked by other factors.
|