Manufacture of IMR powders dates again about 200 decades when the business was at first Started by E.I DuPont. Obtainable for use in many reloading programs, the IMR number of powder is dependable by reloaders all across the globe.IMR imr 4227 load data 4227 Powder in stock now could be the Magnum Pistol Powder within the IMR lineup. If it suggests