IMR 4064 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.

IMR 4064 is a single base, medium-range burn speed powder and is one of the most versatile propellant in the IMR line, used for 223 Remington, 22-250 Remington, 220 Swift, 6mm Remington, 243 Winchester Super Short Magnum, 308 Winchester, 338 Winchester Magnum, and the list goes on and on. Versatility with uniformity and accuracy.

A True All-Rounder: Medium-Burn Versatility

IMR 4064 is a medium-range burn-rate rifle powder prized for its versatility across a huge variety of cartridges. From light, high-velocity varmint loads to larger hunting and magnum rounds, 4064 gives reloaders a predictable, flattering burn that produces tight groups and consistent velocities when worked up correctly. It’s a go-to when you want one powder that can handle multiple roles on the bench.

What It’s Best For Popular Cartridges & Applications

Shooters commonly use IMR 4064 for cartridges including .223 Rem / 5.56, .22-250, .220 Swift, 6mm Remington, .243 Winchester (and WSSM variants), .308 Winchester, and even larger magnums proof that this powder covers both precision and hunting needs. That flexibility makes it especially attractive for reloaders who shoot multiple rifles and want consistent, repeatable performance across calibers. Always reference current manufacturer/loader data for exact charges.

Clean Combustion & Reloading Characteristics

IMR 4064 burns cleanly for an extruded powder and offers reliable metering characteristics for many reloading setups. It’s known for producing tight standard deviations and stable pressures, which helps reduce vertical dispersion at distance. Whether you’re batch-loading practice ammo or fine-tuning a match/hunting load, 4064 is easy to work with and delivers predictable results when you follow published load tables and safe development practices.

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.