The burning speed of this Serious Extruded propellant has been recognised toshooters for decades. With time, Hodgdon has modernized H4350 powder by shortening the grainsfor enhanced metering and making it insensitive to incredibly hot/cold temperatures. H4350 is great incartridges like the 243 Winchester, 6mm Remington, 270 Winchester, 338 Winchest… Read More