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. The 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.