Ballistic gelatin Performance of the 62gr Federal TBBC

All information on this page provided by Doctor Gary Roberts

5.56 mm Federal 62 gr FBI TBBC JSP (XM556FBIT3) fired from 16" 1/7 barrel AR15 at an average MV of 2920 fps; 3 shot average noted below:

 

 

Penetration

Neck Length

Max TX diameter

Recovered Diameter

Recovered Length

Recovered Weight

Bare Gelatin

16.5

1.5cm

11.5cm @ 9cm (1.5-17cm)

0.46

0.32

56.6gr

Auto Glass

14.6

0cm

8.0cm @7cm (0-16cm)

0.40

0.33

39.0gr

 

 

In the photo below, the left two recovered projectiles next to the dime are 5.56 mm 62 gr FBI TBBC (BG over AG)