Ithaca's Mag 10 tamed the 2 ¼-ounce lead 10-gauge magnum shell better than any gun. Shooting one, the sensation was as a firm shove backward, as if a giant laid one finger on your shoulder. Made from 1975 to 1989, the Mag 10 was the favorite of a fanatical few goose and turkey hunters, but never a big seller. When steel shot arrived, Remington bought the Mag 10 patent, redesigned it extensively, and introduced it as the excellent SP10, which, unfortunately, couldn't compete with lighter, more versatile (if much harder kicking) 3 ½-inch 12s. —P.B.