Box of 5 Lightfield Home Defender HV Star 12 Gauge Rubber Slug Rounds. The best defense it a good offense. With a 75-grain HV Star projectile that hits with potentially lethal, definitely painful force, Home Defenders Shells from Lightfield are about as offensive as you can get… and without endangering those you’re trying to protect!The HV Star projectile has low penetration potential, so there’s less chance it’ll break through walls on a miss. Muzzle velocity: 850 f.p.s. NOT for use with full-choke barrels.