pub const BC_FALLBACK_ULTRA_LIGHT: f64 = 0.172;Expand description
BC fallback values by projectile weight category (grains)
Values based on statistical analysis of ballistic coefficient vs mass relationships. Each constant represents 25th percentile BC for that weight category. Ultra-light projectiles (0-50 grains) Typical: .17 caliber varmint bullets, .22 caliber target bullets