Hevi-Shot Hevi-XII 20 Gauge 3in #4 1-1/4oz Waterfowl Shotshells - 25 Rounds - HEVI-XII. The original 12 density tungsten pellet that HEVI-Shot pioneered over 20 years ago. With the increased density, you can drop down three shot sizes of steel for the same lethality. By dropping down three shot sizes, you have over 28% more deadly pellets in the air. The result? More kills, fewer cripples, better stories. Pack HEVI-XII in and walk out carrying extra weight. In 2023 Hevi-Shot are expanding our current line up to offer heavier payloads in 12 and 20 gauge. All Season Reliability Non-toxic tungsten pellets