Hornady Triple Defense ammo is a new load specifically designed for the Taurus Judge and other similar .410/.45 Colt revolvers. This new load is part of the company’s Critical Defense line of ammunition.
This specific round stacks a non-jacketed (bare lead only) FTX slug on top of two .35 caliber round balls. Standard 00-buckshot is .33 caliber and 000-buck is .36 caliber. So, the two balls are slightly larger than 00, but not quite 000-buckshot.