This extruded powder is a member of Hodgdon's Extreme series of powder with slow-burning characteristics, perfect for highly-overbored magnums like the 7mm Remington Magnum, 7mm STW, and the 30-378 Weatherby. In addition, with heavy bullets, H1000 gives top velocity and performance in such cartridges as the 6mm-284, 257 Weatherby, 270 Winchester, and 300 Winchester Magnum. In a short period of time, this powder has achieved considerable popularity among long-range match shooters. Available in 1 lb. container or 8lb container.