The Federal Premium loads start with the finest primers, which are subjected to more frequent inspections for dimensional tolerances and charge weight to ensure they deliver consistent ignition for every shot. Next is the propellants, which are specially formulated to meet Federal's stringent specifications. These clean-burning powders are of the highest grades in the industry. They're consistent and reliable. Prairie Storm combines Federal's FLITECONTROL FLEX wad and FLITESTOPPER pellet technologies to deliver consistent patterns that put more than 75 percent of their pellets in a 30-inch circle at 40 yards, as well as energy similar to the most popular lead loads.