Is a 20-gauge or a 28-gauge powerful enough to hunt ducks or pheasants? Can you really hunt turkeys with a .410 bore? Are sub gauges able to do the job just as well as a 12-gauge? I examine the ballistics of waterfowl, pheasant, and turkey ammo across the most popular sub gauges to see how they really stack up. Yes, sub-gauges have less recoil and generally weigh less, but are they capable for the job using bismuth, steel, lead, or TSS hunting loads?