Special thanks to J.K. for sponsoring this test in full. Cartridge : 400 Corbon 155gr DPX (Part # DPX400CB155/20) Firearm : Recoil-operated handgun with 7" barrel length Block calibration : All depths corrected (From 11.3cm @ 630 ft/sec) Shot 1 - Impacted at 1202 ft/sec. Penetrated to 14.8" and was recovered at 0.591" average diameter and 154.8gr weight. Shot 2 - Overpenetration assessment. Impacted at 1192 ft/sec. Penetrated to 6.8" in the first gelatin block, fully perforated the FBI 'interior wall' fixture and continued on to penetrate 2.6" into the second block. Bullet was recovered at 0.621" average diameter and 154.3gr weight. The second picture illustrates the bullet and final track from shot 2.