Product Information: IMR 4451 Powder 

IMR 4451 powder is a versatile, match-grade propellant with a mid-range burn speed in the Enduron line. It is an extruded powder and is perfect for cartridges like 270 Winchester, 30-06 or 300 Winchester Short Magnum, among others.

The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly.

This propellant performs comparably to Hodgdon H4350 but charge weights are materially different.

To achieve optimal results with IMR 4451, it is important to consult the IMR 4451 load data and recommendations provided by IMR Powder. The load data specifies the appropriate charge weights, bullet weights, seating depths, and overall cartridge lengths for specific rifle cartridges.

Adhering to these recommendations ensures safe and efficient reloading while maximizing the performance of versatile rifle powder.

Important Information:

• It is imperative that you do not go over the loads that are specified in the reloaders handbook.
• Never, ever combine any powders, regardless of the kind, brand, or origin of any powder.
• Never attempt to use smokeless powder as a replacement for black powder or any other kind of black powder alternative.

Specifications and Features:

• Smokeless gunpowder that has been extruded
• High velocities combined with a diverse assortment of case types
• Insensitive to the effects of changing temperatures
• Copper deposits are no longer deposited.
• Very versatile

IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data.