lead BB are the minimum size.
Cabelas.com sells some cheap 3 inch mag BB. 14.99/25. I bet it's mostly used on geese.
Before lead shot was banned throughout most of North America for use on waterfowl, Lead BB was the load of choice for long range goose hunting. The same performance characteristics that made it so well suited for that application merit consideration when evaluating short range loads for your tactical shotgun. We feel lead BB has it's place, being a reasonable balance of penetration and pellet count. That being said, it is not recommended for medium range work. #4 buckshot is the minimum pellet size we recommend for general tactical applications.
