chopinbloc
Member
Link to video of test
69 gr Nosler HPBT loaded over 23.4 gr IMR 8208 and fired from 19.5" AR with Surefire FA556AR silencer into calibrated 10% gelatin.
BB: 592.2 fps, 3.3"
Impact velocity: 2,743 fps
Penetration: 13.1"
Retained weight: 26.9 gr
Max expansion: 0.557"
Min expansion: 0.375"