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IMR POWDER 4166 1LB ENDURON 10/CS
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.
Comparable to Hodgdon Varget. Consult Hodgdon loading manual for appropriate loading data.
Read 3 Reviews - Average Rating: 4.3 stars
IMR 4166 in 308
By Robert P.
on Apr 13, 2015
Used this powder with Nosler 175 custom competition bullet. This powder outpreformed Varget, RL 15, and IMR 4064 in my stock Savage 10 T rifle. My best 5 shot group at 200 yards is .850". The powder does reduce copper fouling and is about as clean as RL 15. My only complaint it is not "fine" grained. This powder meters about as good as IMR 4064. However, I can live with that with the groups I am getting at this early stage of load development.
By Brandon S.
on Jan 01, 2015
Great for varmint and coyote loads works very well with speer 90grain tnt and 95 gran v max speer was highly accurate even at 500
By Allen W.
on Dec 20, 2014
I LOADED MAX LOAD IN MY 220 SWIFT AND GOT INCH AND A QUARTER GROUPS.TRIED 3 DIFF LOADS EVEN SLOWED IT DOWN A BIT.NO LUCK.GOING BACK TO H 4895 WITH .25 INCH GROUPS AT HUNDRED.THIS IS WITH 40 GR VARMAGEDON.MAYBE 4166 WOULD WORK BETTER WITH 50 GR BULLET.IM GOING TO TEST FURTHER.POST RESULTS LATER.
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