Aerodynamic Drag Modeling for Ballistics / Custom Drag Modeling

Author: Bryan Litz, Applied Ballistics

Link: http://www.appliedballisticsllc.com/Articles/ABDOC130_CDM.pdf

Description: Ballistic Coefficients (BC’s) are familiar numbers to most shooters.  In most applications of normal long range shooting the BC tells us enough about our bullets drag to predict accurate trajectories.  However, when the bullet flight time starts to exceed several seconds and bullets approach the transonic range of flight, you need a more accurate way of modeling the aerodynamic drag of your bullet than just a single BC.  This is where ‘Custom Drag Modeling’ comes in.

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