Lightfield Industries, maker of the very accurate attached-wad Hybred slug, also owns the heavyweight slug title. Its 13⁄8-ounce, 1890-fps, 31⁄2-inch 12-gauge Commander IDS Plus ($16.59 for five; litfld.com) generates 4,759 foot-pounds of muzzle energy, putting it in .458 Win. Mag. territory. It's popular among Western fish-and-game and energy-company workers in bear country. I shot a couple of boxes out of my 870 Super Magnum turkey gun with an Improved Cylinder choke. I stood 20 yards from a target, pretended my life depended on it, and emptied the gun quickly offhand. I could hit a minute of grizzly with it. Recoil was stiff, but it hurts less than getting eaten.