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. Bring upland birds down hard. Wing-Shok High-Velocity loads feature Federal Premium copper-plated lead shot and the best components for the most consistent, deadly patterns possible for pheasants, quail, grouse, and more.