Function litz_crosswind_jump_moa 

pub fn litz_crosswind_jump_moa(
    sg: f64,
    length_calibers: f64,
    crosswind_from_right_mph: f64,
    is_right_twist: bool,
) -> f64

Bryan Litz’s crosswind aerodynamic-jump estimator (“Applied Ballistics”).

Linear regression for the VERTICAL jump a crosswind imparts to a spin-stabilized bullet, in MOA per mph of crosswind:

  Y = 0.01*Sg - 0.0024*L + 0.032        [MOA per mph]

where sg is the gyroscopic (Miller) stability factor and length_calibers is the bullet length in calibers. The returned value is the SIGNED vertical jump in MOA for the supplied crosswind and twist hand: per Litz a right-twist bullet jumps UP for a crosswind from the right and DOWN for one from the left, so crosswind_from_right_mph is positive for a wind coming from the right.

This is a regression valid mainly near Sg ~ 1.75; accuracy degrades for bullets well outside the fitted data set. See MBA-959.