IMR 4955 is a versatile, match-grade propellant with a mid-range burn speed that is in between IMR4451 and
IMR7977. It is an extruded powder and provides top performance for big game cartridges like 25-06, 270
Winchester, 280 Remington and 300 Win Mag, among other cartridges.
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 H4831 but charge weights are materially different.
IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data.
Available in 1-LB and 8-LB containers.
This new Enduron extruded powder is a top PERFORMER with such great
cartridges as the 270 Winchester, 25-06 Remington, 280 Remington and 300 Winchester
Magnum, and many, many more. It falls directly between IMR 4451 and IMR 7977 in burn
speed, providing top performance for all cartridges used for big game. As with all Enduron
powders, it is temperature insensitive, clean burning, minimizes coper fouling and is totally
safe for the environment.
Production of IMR 4955 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.
The main features of the IMR 4955 series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density, and being environmentally friendly. IMR 4955 will help you triumph, regardless of the elements or the size of your target. Falling between IMR 4451 and IMR 7977 in burn speed, it can be loaded in popular cartridges like the .25-06, .270 Winchester, .280 Remington, and .300 Winchester Mag. IMR 4955 with Enduron: trusted when Mother Nature can’t be.
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