IMR 4350 Smokeless Gun Powder Production of IMR Powders dates back over 200 years when the company was originally founded by E.I DuPont. Available for use in many reloading applications, the IMR series of powder is trusted by reloaders all across the globe.
An extruded powder, IMR 4350 is primarily used for the newest short magnum cartridges in the industry but also used for silhouette shooting. Also for magnums with light to medium bullet weights, IMR 4350 is the best choice.
Important Information:
Do not exceed the loads displayed in the reloaders guide.
Never mix any two powders regardless of type, brand, or source.
Never substitute any smokeless powder for Black Powder or any Black Powder substitute.
 WARNING: 
