Migra Ammunition Stack Features Migra Ammunitions Stack shells use an innovative combination load that layers #4 and #6 steel shot into one shell giving hunters increased versatility across different waterfowl hunting situations without needing to carry multiple shell types. Manufactured in small batches Migra shells are built to deliver consistent patterns and improved kill ratios with premium steel shot and no fillers used in the load. The 1515 feet per second muzzle velocity provides the pattern density and downrange energy needed for ethical effective shots on ducks geese and other waterfowl. Each shell is built on a 3 inch 12 gauge hull carrying a 1-1/4 ounce payload of steel shot a standard waterfowl load weight that balances pattern density with manageable recoil. The patent pending stack load technology is designed to give hunters a practical edge in the field letting one shell cover more scenarios than a single shot size load typically can. This box of 25 rounds is suited to hunters who want dependable performance without switching loads mid hunt. Migra s focus on small batch manufacturing and premium components makes this Stack load a strong option for serious waterfowl hunters. Migra Ammunition Stack Specifications Manufacturer: Migra Ammunitions Model: Stack Gauge: 12 GA Shell Length: 3 Shot Material: Steel Shot Size: #4 and #6 Shot Type: Stack Shot Weight: 1-1/4 oz Muzzle Velocity: 1515 fps Rounds Per Box: 25 Primer: 209 Case Material: Plastic Brass Type: High Brass Bullet Weight: 1-1/4 oz Available At: GrabAGun