RIO Ammunition Royal BlueSteel Magnum 20 Gauge 3 1 Oz 2 Shot 25 Bx/ 10. These shells were specifically designed for nontoxic waterfowl hunting applications guaranteed to perform in even the most adverse conditions. If you are looking for a reliable and high-quality game load specifically for waterfowl hunting look no further than the Royal Blue Steel line of game loads from Rio. These loads come in both 12-gauge and 20-gauge sizes capable of delivering impressive muzzle velocities of up to 1550 feet per second. Specifications for RIO Ammunition RBSM202 Royal BlueSteel Magnum 20 Gauge 3" 1 Oz 2 Shot 25 Bx/ 10: Manufacturer: RIO Ammunition Gauge: 20 Number of Rounds: 25 Shot Size: 2 Muzzle Velocity: 1400 ft/s Shotgun Shot Weight: 1 oz Primer Style: Centerfire Length: 3 in Package Contents: RIO Ammunition RBSM202 Royal BlueSteel Magnum 20 Gauge 3" 1 Oz 2 Shot 25 Bx/ 10 RIO Ammunition RBSM202 Royal BlueSteel Magnum 20 Gauge 3 1 Oz 2 Shot 25 Bx/ 10