There are many types of Shotgun Ammo Online available, from birdshot to buckshot to slugs. You can find the right type of Online Shotgun Ammo for your needs by doing a bit of research on the different types available. Birdshot is the most common type of shotgun ammo and is used for hunting small game and birds. It is available in a variety of sizes, from #4 birdshot up to #8 birdshot.