Rio Ammunition Royal Buck Low Recoil 12 Gauge 2.75 in Buckshot Centerfire Shotgun Slug Ammo 9 Pellets Rblr129. 75" Buckshot 9 Pellets 0 - RIO's Royal Buckshot is ideal for in the field home defense and law enforcement agencies worldwide. The sheer kinetic energy and knockdown power of this buckshot makes for an excellent choice for whitetail-sized game wild boars or foxes and provides unmatched performance when you need it most. This low recoil 12 gauge load has a 00 buck shot size. Specifications for Rio Ammunition Royal Buck Low Recoil 12 Gauge 2.75 in Buckshot Shotgun Ammo: Manufacturer: RIO Ammunition Gauge: 12 Number of Rounds: 5 Shell Length: 2 3/4 in Muzzle Velocity: 1200 ft/s Included Accessories: Standard Application: Self-Defense Primer Style: Centerfire Shotgun Pellet Count: 9 Additional Features: 9 Pellets Velocity: 1200 fps What is Rio Ammunition Royal Buck Low Recoil 12 Gauge 2.75 in Buckshot Shotgun Ammo good for? The manufacturer suggests that it is best for self-defense.