Remington Ultimate Defense, 20 Gauge 2.75, #3 Shotshell, 17 Pellets, 5 Round Box 20681 These rounds deliver dense, devastating patterns and massive knockdown power when the stakes are at their highest. Short-range patterns in smoothbore barrels are tight and effective for one-shot confidence. These 12-gauge loads include standard 9-pellets and managed recoil 8-pellets of 00 buckshot to maximum shotgun effectiveness.