Hornady SST Shotgun Slugs feature patented Flex Tip technology. Take the proven performance of Hornady’s super-accurate patented bullet and transform your favorite rifled barrel slug gun into a firearm that outperforms some centerfire rifles. In both 12 gauge and the 20 gauge cartridges” Hornady SST Shotgun Slugs deliver sub-2″ groups at 100 yards and feature the flattest trajectory on the market.