Remington Low Decibel, 410 Bore, 2.5, #9 Shot, 1/2 ounce, Subsonic Shot, 25 Round Box R20740 Remington Low Decibel is the best .410 Bore answer for shooting subsonic shotshells. With a muzzle velocity of only 550 fps, your recoil is reduced without sacrificing dense, clay-busting patterns downrange. Turn down the noise and turn up the fun with Remington Low Decibel.