Accurate Magpro Accurate Powders is a company that definitely lives up to its name. The complete line of smokeless powders for handguns, rifles, and shotguns is engineered and lab-tested to maximize the precision and performance. Accurate uses the best ballistic technicians and the highest quality components together to assure that every gun is better served with Accurate Powders. Accurate MAGPRO is a slow burning, double-base, spherical rifle powder developed specifically for the Short magnums of both Winchester (WSM) and Remington (SAUM). This powder excels in the 6.5 x 284, 270 WSM and the 7mm WSM. MAGPRO is an excellent choice for belted cartridges such as the 300 Win Mag. Consistent performance can be expected from the excellent metering properties of MAGPRO. 1 lb. WARNING: This product can expose you to chemicals which are known by the state of California to cause cancer and birth defects or other reproductive harm. For more information go to-www.P65Warnings.ca.gov