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)