Ballistic Gel Recipe Done Correctly For Regulation 10% by Weight and Proper Density
I'm a retired cop and have made both ballistics gel and used off the shelf unflavored gelatin,
The bellow recipe has worked for me for over 13 years. It gives the best results and as long as the steps are followed exactly and will result in calibrated FBI regulation ballistic gel. I got this recipe from firearmstactical.com back in 2000 and its given better results than any other manufacture steps.
Calibration of finished product by FBI staandard:
Complete calibration by using a air rifle or pistol shooting a steel BB into it at a velocity of 590 feet per second ± 30 fps. The BB should penetrate 8.5 centimeters. This test done on bare gel block with no fabric or clothing in front of the target.