Shooting tungsten matrix shells 2 3/4 #5, has made me a better duck hunter. I pick my shots more reasonably, I concentrate on my lead more effectively and I am less likely to waste ammo on that third frustration shot. I still have fun and the freezer is full.
duck boat, motor and decoys - $5000
duck lease - $2000
food, shots, etc for the retriever - $1000
a season's worth of non lead ammo - $250
Having that mallard fold on your first shot - priceless