The burning velocity of the Extreme Extruded propellant is recognized toshooters for many years. After a while, Hodgdon has modernized H4350 powder by shortening the grainsfor enhanced metering and making it insensitive to hot/cold temperatures. H4350 is great incartridges including the 243 Winchester, 6mm Remington, 270 Winchester, 338 WinchesterM… Read More