Many thanks to Cor-Bon for providing the ammunition used in this test. Block calibrated at 9.1cm and 586 ft/sec. Firearm was test barrel with 2.75" barrel length, chambered for .32NAA cartridge. First shot was a Cor-Bon 60 grain JHP (bare gelatin), which impacted at 1215 ft/sec, penetrated to 6.5" and expanded to 0.576" average diameter. Penetration is outlined in blue. Second shot was a Cor-Bon 60 grain JHP (4-layer denim), which impacted the denim-faced block at 1298 ft/sec, penetrated to 7.6" and exhibited severe fragmentation along the last half of the penetration depth. Average recovered diameter was 0.421". This track is outlined in green on the picture. The denim test was conducted in response to the answer I got regarding the fragmentation of these particular bullets in bare gelatin, from a representative of Cor-Bon. It was explained to me that these 60 grain JHPs are designed not to fragment when fired into a denim-covered block, as this is the 'industry standard' gelatin block (their words). Third shot was a Cor-Bon 71 grain FMJ (bare gelatin), which penetrated the entire block of 16" and bounced off of the 3/4" plywood facing the back of the block and back ~ 3 inches into the track that it had made on the initial penetration. Impacted at 1030 ft/sec and was recovered virtually undeformed at 0.310" diameter. Track is outlined in yellow.