Special thanks to J.K. for sponsoring this test in full. Cartridge : 165gr Federal Hydra-Shok Firearm : Bond Arms .45ACP Derringer with 3.0" barrel length Block calibration : All depths corrected (From 10.2cm @ 577 ft/sec (bare block), 10.0cm @ 578 ft/sec (denim block), 9.0cm @ 560 ft/sec (overpenetration)) Shot 1 - Bare gelatin shot. Impacted at 935 ft/sec, penetrated to 8.5" and was recovered at 0.724" average diameter and 163.4gr weight. Shot 2 - Heavy clothing shot. Impacted at 891 ft/sec, penetrated to 13.3" (minimum) and was recovered at 0.449" average diameter (no expansion occured) and 165.6gr weight. Shot 3 - Overpenetration shot. Impacted at 901 ft/sec, penetrated to 7.8" in gelatin and interior wall panel. Bullet failed to exit the interior wall. Recovered at 0.711" average diameter and 164.0gr weight.