Cartridge : Federal Tactical rifled slug (Load # LE127RS) Firearm : Pump-action shotgun with cylinder-choked 20" smoothbore barrel Calibration : All Depths corrected (From 9.1cm @ 586 ft/sec) Single shot fired to center of block from 10' distance. Shot impacted at 1321 ft/sec, penetrated to 14.4" and was recovered at 1.010" average diameter. Interestingly, the recovered bullet resembled a donut in that the center of the expanded slug had split from the main portion of the projectile. This fragment was recovered butted up against the alongside the front face of the expanded slug. The 16x6x6 inch block, upon being struck with the projectile, flipped 1.5 feet into the air and off of the test stand. Permanent cavity was 6” in diameter, until 10.5” depth.