Production of IMR powders dates again about 200 decades when the business was initially Established by E.I DuPont. Available for use in many reloading programs, the IMR series of powder is trustworthy by reloaders all across the globe.IMR 4227 Powder in inventory imr 4227 now is the Magnum Pistol Powder within the IMR lineup. If it states Magnum, 4… Read More