Many thanks to Cor-Bon for providing the ammunition used in this test. Cartridge : 45ACP +P 185 grain Cor-Bon DPX Firearm : Recoil-operated handgun with 5.0" barrel length Calibration : All depths corrected (From 9.8cm @ 608 ft/sec) Shot 1 - Penetrated 15.3” and exited the back of the block. 0.613” average diameter. Impact velocity was 1057 ft/sec. Shot 2 - Penetrated 15.3” and exited the back of the block. 0.603” average diameter. Impact velocity was 1031 ft/sec. Shot 3 - Penetrated 15.3” and exited the back of the block. 0.608” average diameter. Impact velocity was 1048 ft/sec. Shot 4 - Penetrated 15.3” and exited the back of the block. 0.577” average diameter. Impact velocity was 1063 ft/sec. Shot 5 - Penetrated 11.9” and exited the side of the block. Bullet was not recovered. Impact velocity was 1051 ft/sec.