WINCHESTER AA SUPER HANDICAP
Winchester Super Handicap is a ball powder and the same propellant used in Winchester’s Super Handicap ammunition. This slow-burning, high-energy propellant gives the shooter great handicap or long-range sporting clays loads at up to 1250 FPS with a 1-1/8 ounce shot charge. The great velocity with excellent patterns!
Available in 1 lb. and 8 lb. containers.
As for using Lee measuring dippers you are most likely in the same situation as dropping powder from the loader. GET A SCALE! The density of the powder that Lee used may not be the same as your powder.
That said and know you are chomping at the bit to get started… if you stick a load on the bottom end of the loads listed. The recomendations for the 1 oz and 1 1/8 oz low velocity should be ok.
The Federals are “straight-wall” (SW) hulls, the Top Guns have a flat, rolled hard paper basewad and the interior diameter of the tube is the same from mouth to base.