Hevi-Shot Hevi-X is a tungsten based waterfowl load. Compared to steel shot shells Hevi-X produces 35% more knockdown power at 40 yards and 50% more knock down power at 60 yards. "Hevi-Like Lead, Deadlier at Distance". Hevi-X offers higher pellet count on target, higher down range velocity, and more consistent patterns than steel. There is nothing like Hevi-X on the market. If you want performance out of a waterfowl shell from the early days, Hevi-Shot has found a way to bring it back at a price you can afford. Hevi-X works great in all Hevi-Shot choke tubes and is non-toxic.