Hevi-Shot Metal Xtreme 20 Gauge 3in 1-1/16oz #4 Waterfowl Shotshells - 25 Rounds - Introducing the next evolution of our HEVI-Metal line up. For the most consistent pattern possible, we combined the renowned FLITECONTROL FLEX WAD and our Pattern Density Technology. This has a leading layer of 30% original HEVI-Shot 12 density tungsten over 70% precision steel pellets. This leading layer of 12 density tungsten hits 53% harder than the steel layer!