The Jelly Head Maximum utilizes an extended taper and fluted ports to tighten patterns up to 20% and reduce recoil, allowing hunters to stop Gobblers in their tracks at even longer ranges. Primos utilizes proprietary Black-T coating, the same protective barrier utilized by the military's Special Forces to prevent rust and corrosion on weapons in the harshest environments, like turkey hunting. Designed to shoot Hevi-Shot, Copperplated lead or regular lead. 90% pattern density at 40 yards.