Migra Ammunition Stack Features The Migra Stack Load combines #1 and #3 steel shot in a single 1-1/4 ounce payload giving hunters a pattern that covers both closer and farther flushes without swapping shells mid hunt. The engineered combination load is built around small batch manufacturing for consistent bulk density and uniform patterning shot after shot. A muzzle velocity up to 1515 feet per second helps ensure the steel shot carries enough energy downrange for clean ethical kills on ducks and geese. Loaded on a high brass hull with a boxer primer the shell is built for reliable ignition and extraction across a range of semi-auto and pump shotguns. Each 3 shotshell is loaded with no fillers keeping the shot column dense and the patterns consistent across the 25-round box. The plastic hull construction stands up to repeated handling in the blind and in the field without splitting or swelling in wet weather. Migra s patent-pending shot combination technology is built specifically to give waterfowl hunters an edge when birds are decoying at mixed ranges. For hunters who want one load that performs across varied waterfowl situations the Migra Stack Load is available for sale at GrabAGun. Migra Ammunition Stack Specifications Manufacturer: Migra Ammunition Model: Stack Gauge: 12 GA Shell Length: 3 Shot Material: Steel Shot Size: #1 and #3 Payload Weight: 1-1/4 oz Velocity: 1515 FPS Rounds Per Box: 25 Primer: Boxer Case Material: Plastic Brass Type: High Brass Bullet Weight: 1-1/4 oz Available At: GrabAGun