IMR Enduron 4166 Smokeless Gun Powder for sale

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.

This fine, extruded propellant is the first in the series of Enduron Technology powders. The main features of the Enduron series are copper fouling eliminator, insensitivity to temperature changes, ideal loading density and being environmentally friendly. IMR 4166 is the perfect burn speed for cartridges like the 308 Win/7.62mm NATO, 22-250 Remington, 257 Roberts and dozens more. Positively, a versatile, match grade propellant.

IMR Enduron 4166 Smokeless Gun Powder in stock

This was a good substitute for Varget. The testing has shown that is both calibers tried, .308 and 6 BR, it is extremely accurate and giving me results very similar to Varget, although IMR 4166 is just slightly hotter than Varget. 29.8 grains of IMR 4166 gave the same velocity and point of impact as 30.3 grains of Varget in the 6 BR. For the .308, 43 grains of IMR 4166 pushed my 175 grain SMK bulltet about 110 fps faster than 43 grains of Varget. This will be a powder to be kept on the reloading shelf along with Varget for those in competitive shooting applications.

IMR Enduron 4166 Smokeless Gun Powder available

Loaded it in 243. 36.3 grains under a Hdy 100 gr interlock . Groups Great deer load with a great bullet also. Give it a try. Thanks Primers outdoor for having both in stock a while back. This works great in my model 70 super grade with Sierra Game King 150s. It’s not a fussy rifle.

IMR Enduron 4166 Smokeless Gun Powder buy now

308 FMJBT 147-150gn, 42.5gn 2.755 oal through either AR10 or fussy Mauser M18. Fantastic for 55-62gn 223 as well. The IMR 4064 loads transfer closely to 4166 and 4895 in above-mentioned caliber. Relative performance at sea level and high desert LOS etc are easy to build ballistics for with this temperature insensitive charge. Fast burning, ultra clean. which means ultra clean and consistent.

IMR Enduron 4166 Smokeless Gun Powder

loaded up the 175 Match King with a starting charge (according to Hodgdon) of IMR4166 because on a newer barrel didn’t want to lay down a bunch of copper fouling so wanted a powder like 4166 with the copper eating goodies in it. 1st two at 100 yards landed a foot apart but the barrel started clean and needed to foul a little.

The 4th shot landed OK, went to 200 yards where the 5th, 6th and 7th shots landed in about a 2 and 1/2″ triangle. Now that the barrel was fouled with seven shots (which read once that bench-rest shooters claim it really takes to foul a clean barrel) It took it to a 400 yard gong in light sideways breezes. 4166 will obviously do anything 4064 will do in a 30-06, which people usually choose a powder that burns too slow in for great accuracy.

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