Cartridge : Remington 158 grain +P lead hollowpoint ('FBI load') (Load # R38S12) Firearm : .38 Special revolver with 1 7/8" barrel length. Calibration : All depths corrected (From 9.8cm @ 609 ft/sec) Shot 1 = 11.5" penetration. Shot 2 = 11.5" penetration. Shot 3 = 11.8" penetration. Shot 4 = 11.3" penetration. Shot 5 = 11.0" penetration. Average final diameter (5 bullet average) = 0.592" Talk with other shooters about this test on The High Road.org : www.thehighroad.org