Cartridge : Aguila SE 38gr subsonic lead hollowpoint Firearm : Ruger 10/22 rifle with 18.5" barrel length. Calibration : All depths corrected (From 11.7cm @ 618 ft/sec impact velocity and 10.0cm @ 587 ft/sec respectively). Shot 1 - Penetrated to 10.8". Impact velocity was '1002 ft/sec' (chronograph malfunction). Expanded diameter was 0.340". Penetration track outlined in green. Shot 2 - Penetrated to 9.8". Impact velocity was not recorded (separate test event from Shot 1). Expanded diameter was 0.344". Talk with other shooters about this test on The High Road.org : www.thehighroad.org