Remington Royal Flush 20 Gauge 1oz 3in Shotgun Ammo 6 Shot 25 Rounds. This Remington Ammunition features 6 5 4 shotgun shells that deliver strong stopping power pinpoint accuracy and predictability for hunting. . Order today to get 3 in shotgun shells delivered right to your door. With daily deals on Ammunition and other high-quality shotgun ammo from trusted brands like Remington you re sure to find the perfect firepower for the hunt or the range. Stock up today to save big on shells and other top-tier tactical hunting and outdoor gear at OpticsPlanet. What is Remington Royal Flush 20 Gauge 1oz 3'' Shotgun Ammunition good for? The manufacturer suggests that it is suitable for hunting.Remington R20561: Royal Flush 20 Gauge 1oz 3in Shotgun Ammo 6 Shot 25 Rounds