Production of IMR powders dates again about two hundred yrs when the corporate was initially Launched by E.I DuPont. Readily available for use in many reloading programs, the IMR number of powder is trustworthy by reloaders all across the globe.
IMR 4227 Powder in inventory now would be the Magnum Pistol Powder from the IMR lineup. If it says Magnum, 4227 powder imr 4227 load data is the option for accurate magnum velocities and effectiveness. In rifles this powder imr 4227 load data provides exceptional velocity and accuracy in these cartridges as being the 22 Hornet and 221 Fireball.