The Estate Cartridge Super Sport loads include extra-hard ammo as this makes it easier to break targets during competition shooting. The tight patterns improve accuracy even at long range helping competitors hit the target.There are nine different shell choices each of which come with 25 rounds per box. They can include 12-gauge 1_-ounce rounds; 12-gauge 1-ounce rounds; 20-gauge _-ounce rounds; or small gauge (28 or .410) rounds (_ or _ ounces). This selection allows you to pick the right shells for your weapon target and preferences.