Many thanks to Cor-Bon for providing the ammunition used in this test. Cor-Bon .45ACP 165 grain +P Pow'R Ball Firearm was semi-automatic action with 3.8" barrel length Block calibrated at 9.3cm penetration and an assumed impact velocity of 600 ft/sec. (chronograph malfunctioned due to rain at the test site). Shot 1 - Penetrated to 10.9". Average recovered diameter 0.659". Shot 2 - Penetrated to 12.6". Average recovered diameter 0.687". Shot 3 - Penetrated to 11.8". Average recovered diameter 0.698". Shot 4 - Penetrated to 12.2". Average recovered diameter 0.668". Shot 5 - Penetrated to 11.4". Average recovered diameter 0.684". Average diameter = 0.679". Average penetration depth = 11.8"