https://youtu.be/fTne55R3dK8
200 gr subsonic REAPR fired from 8" 1:7" AR into calibrated 10% ordnance gelatin, with and without four layers of denim.
BB calibration: 597.3 fps, 3.6"
The sun was not co-operating so impact velocity was not recorded on either shot. I intend to test this some more but I only have a few so I didn't want to "waste" any on just a velocity.