Special thanks to J.K. for sponsoring this test in full and Shadan7 for setting this up, in the initial stages. Cartridge : Cor-Bon 125gr JHP (Part #SD357SIG125/20) Firearm : Recoil-operated handgun with 4.0" barrel length Block calibration : All depths corrected (From 10.8cm @ 609 ft/sec) Shot 1 - Impacted at 1381 ft/sec and penetrated to 11.9". Recovered at 0.535" average diameter and 84.2gr weight. At this point, the test setup was altered. At the request of the test's sponsor, the potential liability of the tested bullets in the case of an overpenetration of the target in an interior room was assessed. This was accomplished by the cutting of the gelatin block into two 8"x6"x6" blocks, placing one piece at a linear distance of 4" from the face of the FBI 'interior wall' test fixture (two pieces of 0.5" wallboard, on a 2x4 frame), while placing the other block 4" back from the rearmost wallboard panel. This setup is illustrated by the attached photograph of the test setup. Shot 2 - Overpenetration evaluation. Impacted at 1376 ft/sec, penetrated to 7.5" in gelatin, penetrated an FBI 'interior wall' fixture and continued on to penetrate 0.9" of gelatin on the other side of the wall. 0.545" average diameter and 89.0gr weight.