Question: what is the difference between 12 gauge shotgun shells?
Answer: The most common shotgun ammunition is the 12 gauge and the 20 gauge. The gauge is the diameter of the bore, which is the hollow part of the barrel. ... A 20 gauge shell will contain less gunpowder, which means it won't recoil as much when fired. A 12 gauge shell contains more gunpowder, so it will have a lot more recoil.