OFF_RETICLE_MARGIN_FRACTION

ballistics_engine::reticle

Constant OFF_RETICLE_MARGIN_FRACTION 

Source 
pub const OFF_RETICLE_MARGIN_FRACTION: f64 = 0.20;
Expand description

Fraction of each axis’s mark span added as slack before a hold counts as ReticleHold::off_reticle. See that field for the exact rule.