Which shotgun has a larger bore?

The 12 gauge shotgun has a larger bore compared to the other options. The gauge number in shotguns is a measure of the diameter of the barrel; a lower gauge number corresponds to a larger bore size. Specifically, a 12 gauge shotgun has a diameter of about 0.729 inches, making it one of the most commonly used sizes due to its versatility for various types of shooting, including hunting and sport shooting. In contrast, the 20 gauge, 16 gauge, and 28 gauge all have smaller diameters, which means they are designed for different shooting scenarios and can be less powerful than the 12 gauge. The larger bore of the 12 gauge allows for the firing of larger shot or more pellets, which can result in a wider shot pattern, enhancing effectiveness in certain hunting situations.