Product Overview
IMR Enduron 4166 is a versatile, match-grade propellant, with the fastest burn rate in the Enduron line. It is an extruded powder with a perfect burn speed for cartridges like 308 Winchester, 7.62mm NATO, 22-250 Remington or 257 Roberts, 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 Varget but charge weights are materially different.
Made in Canada.
Available in 1-LB and 8-LB containers.
Reviews
15 Reviews
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5 Still a work in progress
Posted by Gerry on Jun 26th 2021
It acts a whole lot like Varget, but is much easier to find. When I hit that node It's going to be great. I use in 243 Win and 6.5 CM. They both love it.
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4 IMR 4166
Posted by Jim on Jun 13th 2021
Good powder
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5 measured well, shot well
Posted by Cunningham on Jun 3rd 2021
will re order
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5 works great in many cartridges with good to great accuracy
Posted by jerry capps on May 22nd 2021
when enduron works it is often same hole shooting
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5 Great powder
Posted by Jeremy on Jan 25th 2021
Great powder
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5 Great powder for 308 Winchester!
Posted by Rick on Dec 1st 2020
Working up a good hunting load with the 4166 Enduron and the Hornaday 150 gr GMX bullets for my 308. First ladder turned out great! Very happy with the results.
