IMR Enduron® 7977

(5 reviews) Write a Review
$49.99 - $357.99

Smokeless Powder

Product Overview

IMR Enduron 7977 is a slower burn rate in the Enduron family. Loading density is perfect for magnums, contributing to superb uniformity. This is a true magnum propellant yielding outstanding performance in 300 Winchester Magnum, 7mm Remington Magnum and 338 Lapua, among other cartridges. Loading density is perfect for magnums, nicely filling the case at maximum charges, contributing to superb uniformity and accuracy.

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

IMR 7977 performs comparably to Hodgdon H1000 but charge weights are materially different.

Made in Canada. 

Available in 1-LB and 8-LB containers.


(5 reviews) Write a Review

5 Reviews

  • 5
    IMR 7977

    Posted by Grande on Aug 30th 2022

    I use 98 grains in a 31" 300 RUM. I love it! Pushing 163gr SCBT 3611 fps (avg.) When will it be back in stock?

  • 5
    IMR 7977

    Posted by Terry Wolford on Nov 22nd 2021

    Works great in a 7mm Remington Magnum cartridge out of a Winchester Stainless Model 70 using 136 gn Hammer (sledge hammer) bullets. Really consistently accurate results.

  • 5

    Posted by Bill on Jul 16th 2021

    56.0 grns behind a 100gr NBT got me 0.5" at 100 with 3156 f.p.s.

  • 4
    IMR 7977 enduron reloading powder

    Posted by marcus john tweddell on Mar 3rd 2021

    have used this powder in a .270 wsm useing the Hornady 150 grain SSTwith the exact load as HODGDON recomends and found it accurate and takeing large red deer out to 500 meters with ease.

  • 5
    338 lapua

    Posted by Grassl on Sep 20th 2020

    Very fast flat shooting powder. Consistent performance . 338 lapua 250 grain BTHP.