Hevi-X is a tungsten-based waterfowl load. Compared to steel shotshells, Hevi-X is "Deadlier at Distance", giving you 35% more knockdown power at 40 yards and 50% more knock down power at 60 yards. Hevi-X gives you higher pellet count on target, higher down-range velocity and more consistent patterns than steel. Hevi-X is made in the USA.