Alliant Powder's Power Pro? 1200-R is made for high-volume shooters who burn through .223 ammunition at the range. The propellant is specifically formulated for progressive loading. It meters extremely well, and its double base provides consistent ignition and performance across a range of temperature and humidity extremes. A great all-around medium speed rifle powder providing excellent .223 and .308 caliber performance. Selected as the powder for U.S. Military's M118 special ball long range sniper round.