b'4DOF BALLISTIC CALCULATOR 4DOF FEATURES CALCULATORBULLET LIBRARYChoose your bullet from an extensive library that includes not only Hornady bullets but also a wide range of options from other manufacturers. With over 400 unique values available for each bulletsuch as mass, aerodynamic properties, and drag coef cientsthis tool ensures precise trajectory calculations tailored to the speci c projectile you selectMUZZLE VELOCITYNo need for muzzle velocity truing. Simply input the measured muzzle velocity, and the calculator accounts for temperature effects using a Temperature Sensitivity Factor (TSF) derived from testing or selected from a propellant library. This eliminates guesswork and enhances accuracy in varying conditions.ZERO ANGLEAn alternative to traditional zero range, Zero Angle calculates trajectory based on the barrels launch angle. By establishing axed zero angle, users can maintain consistent accuracy without the need to re-zero, regardless of environmental changes or shooting conditions.AXIAL FORM FACTORFine-tune bullet drag to match the unique characteristics of your barrel and muzzle device. Adjustments to the Axial Form Factor can be made at any distance (400800 meters recommended) without requiring transonic or subsonic conditions. This ensures an optimal match between the calculator and real-world performance.HornadyLE.com 45'