Creation of IMR powders dates back over 200 decades when the business was at first founded by E.I DuPont. Accessible for use in several reloading applications, the IMR series of powder is reliable by reloaders all around the world.

IMR 4227 Powder in inventory now will be the Magnum Pistol Powder during the IMR lineup. If imr 4227 load data it says Magnum, 4227 powder may be the choice for genuine magnum velocities and imr 4227 overall performance. In rifles this powder delivers great velocity and precision in such cartridges because the 22 Hornet and 221 Fireball.