20 Gauge

There are many different Gauges of shot shell, from very large 4 Gauge shotguns all the way down to .410 gauge and 9mm flobert. The most common gauge of shell in the United States is 12 gauge with the 20 gauge following just after. While 10 gauge is less common it is still available. There are many shot or projectile types available for shotguns, smaller shot sizes for varmints, small game and birds all the way up to large shot and slugs for larger game.