Cartridge : Hornady 230gr +P XTP (short barreled pistol) (part # 9096). Firearm : Recoil-operated handgun with 3.8" barrel length. Calibration : Shots 1, 4 & 5 corrected (From 8.1cm @ 589 ft/sec) Shot 1 - Penetrated 12.9", expanded to average diameter of 0.643" and impacted at 793 ft/sec. Shot 2 - Impacted at 803 ft/sec and penetrated 7.0" of frozen gelatin (block was left in refrigerator at too low of a temperature for too long, so two corners froze). Shot 3 - Impacted at 798 ft/sec and penetrated 7.6" of frozen gelatin. Expanded to average diameter of 0.674". Shot 4 - Penetrated 12.6", expanded to 0.686" average diameter and impacted at 785 ft/sec. Shot 5 - Penetrated 12.4", expanded to 0.660" average diameter and impacted at 792 ft/sec.