Manufacture of IMR powders dates again above 200 yrs when the company was at first Established by E.I DuPont. Available for use in many reloading purposes, the IMR number of powder is reliable by reloaders all across the globe. IMR 4227 Powder in inventory now is the Magnum Pistol Powder https://imr4227loaddata97148.like-blogs.com/27613820/imr-4227-powder