Cartridge : Remington 158 grain +P lead hollowpoint ('FBI load') (Load # R38S12) Firearm : .38 Special revolver with 1 7/8" barrel length. Calibration : 8.1cm and 601 ft/sec impact velocity. Average uncorrected penetration was 10.8” Average corrected penetration was 11.6" Average recovered diameter was 0.595” Block pictured was split in two and the bullets pulled by bullet probe, then replaced for photographic purposes. Talk with other shooters about this test on The High Road.org : www.thehighroad.org