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.Extend the range and enhance the lethality of lead turkey payloads with Federal Premium Grand Slam. Its FLITECONTROL FLEX wad system works in both standard and ported turkey chokes, opening from the rear for a controlled release of the payload and extremely consistent patterns. The high-quality copper-plated lead pellets are cushioned with an advanced buffering compound to provide dense patterns and ample energy to crush gobblers.