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The Determination Of G1 And G7 Ballistic Coefficients Of .22lr Caliber Ammunition In Gypsum Board Through Doppler Radar Acquisition, Jose A. Colon Jr.
The Determination Of G1 And G7 Ballistic Coefficients Of .22lr Caliber Ammunition In Gypsum Board Through Doppler Radar Acquisition, Jose A. Colon Jr.
Student Theses
In this experiment, a method of calculating ballistic coefficients of .22LR (long rifle) caliber ammunition was developed using Doppler radar to track the pre-impact and post-impact velocities of projectiles passing through gypsum board. The method demonstrated has distinct advantages in accuracy and flexibility over conventional chronograph projectile tracking that forensic firearm experts should consider when determining the optimal method to obtain a ballistic coefficient (BC). G1 and G7 ballistic coefficients were determined for three .22LR ammunition brands with respective muzzle velocities of approximately 1050ft/s (320m/s), 1230ft/s (375m/s), and 1640ft/s (500m/s) fired from a Ruger 10/22 semi-automatic carbine using an Infinition …