Hevi-Shot Hevi Bismuth 410 3in #4 9/16oz Waterfowl Shotshells - 25 Rounds - When you're waking up at zero-dark-thirty and heading out in the chilly morning fog of opening day, you want to give yourself every opportunity for success. You want a shell that delivers maximum force at a price that doesn't force you to take out a second mortgage. Our new HEVI-Bismuth Waterfowl shells utilize bismuth, which is 22% denser than steel, to deliver more downrange lethality at an affordable price. And, it's safe for older fixed choke and fine classic doubles shotguns. Made in the USA 22% Denser Than Steel