Federal Ultra Steel 12 Gauge 1 1/2oz 3 1/2in Shotgun Ammo 2 & 4 Shot 25 Rounds PWUX134 24. This Federal Ammunition features 4 2 bb shotgun shells that deliver powerful stopping power flawless precision and reliability for waterfowl. . Shop now to get 3 1/2 in shotgun shells delivered right to your door. With amazing deals every day on Ammunition and other high-quality shotgun ammo from trusted brands like Federal you re sure to find the ideal effectiveness for your next outdoor adventure or training session. Stock up today to save big on shells and other top-tier tactical hunting and outdoor gear at OpticsPlanet. What is Federal Ultra Steel 12 Gauge 1 1/2oz 3 1/2'' Shotgun Ammunition good for? The manufacturer says that it is suitable for waterfowl.Federal PWUX134 24: Ultra Steel 12 Gauge 1 1/2oz 3 1/2in Shotgun Ammo 2 & 4 Shot 25 Rounds