But he still needs to understand the basic physics of it (with or without the math), or he has to learn it entirely by rote. I doubt he just learns by trial and error that the bullet will drop over distance (actually, time). Discussing that drop - and how much it will be - is a discussion of physics. If he is going to know before the shot how far it will drop, he'll have to do some math.Heck there are "conceptual physics" courses in HS and Colleges that allow people to study and understand the effects of physics without the math. But, as an example imo is an army sniper. The sniper doesn't need to know the mathematical equation on how wind and the coriolis effect, range etc. will impact the trajectory of a bullet so as to accurately adjust one's aim.