Remington HyperSonic Steel 20 Gauge Waterfowl Shotshells - The 1700fps HyperSonic Steel from Remington is the worlds fastest, hardest hitting steel. With unprecedented velocity and the highest downrange pattern energies ever achieved, new Remington HyperSonic Steel takes lethality to new heights and lengths. To a level of terminal performance where more birds drop with fewer shots, at the farthest reaches of your abilities. Hypersonic ammunition shortens your lead by up to 11 percent, that's an 8 inch lead difference at 40 yards! New hotter primer ignites a small powder charge in the chamber, moving entire payload forward slightly to control pressure. Gauge: 20; Length: 3"; Velocity: 1600fps; Rounds Per Box: 25;