Special thanks to J.K. for funding this test in full. Cartridge : Federal 165gr Expanding Full Metal Jacket 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. Impacted at 935 ft/sec, penetrated to 8.5" and was recovered at 0.732" average diameter and 164.8gr weight. Shot 2 - Heavy clothing. Impacted at 937 ft/sec, penetrated to 13.3" (minimum) and was recovered at 0.456" average diameter and 164.1gr weight. Shot 3 - Overpenetration shot. Impacted at 921 ft/sec, penetrated 7.8" of gelatin and indented the surface of the first piece of drywall. Recovered at 0.754" average diameter and 165.0gr weight.