IMR Enduron® 4955

(22 reviews) Write a Review
$40.99 - $270.99
Maximum Purchase:
5 units

Type:
Rifle
Group:
Smokeless Powder

Product Overview

IMR Enduron 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.

Reviews

(22 reviews) Write a Review

22 Reviews

  • 5
    7mm Rem Mag

    Posted by Matt Hancock on May 15th 2022

    Did a workup with 160 barns tsx, 160 Nosler Accubonds, &175 Partitions.160 Accubonds were amazing in terms of groups - SDs just under 20. 175's had great SD's (3ish fsp). Groups could use some work. Interesting powder with a lot of potential. I'd recommend.

  • 5
    300 Win Mag

    Posted by Rene Sarasin on Feb 14th 2022

    4955 works well in my 300 Win Mag. I'm shooting 1/4 moa groups at 100yds with 165 gr Nosler ballistic tips. I killed my mule deer at 525 yds this past season. Extremely happy with this powder.

  • 4
    powder

    Posted by Jay Wright on Jan 12th 2022

    this is a great powder for 300 win mag . I get great es and tight groups. it stomps the metal targets at 1000 yards to glad i got 36 pounds of this stuff

  • 5
    IMR 4955 powder

    Posted by Peter on Nov 23rd 2021

    Loaded 6.5 CM with this powder and Hornady ELD Match 120 gr and Hornady Match 140 gr. BTHP. I shoot at 100 yds. or less for white tail. At 100 yds. my pattern was no greater than 1/2 inch and velocity was very constant. I don't feel the need to max out a load because the deer are always close. I used a mid range powder load and get mid 2400s on the 140 gr. and mid 2600s on the 120 gr. I'm very pleased

  • 3
    .25-06

    Posted by Zac Ferguson on Nov 5th 2021

    If you are doing a load build up, make sure you have a chronograph. What the powder chart shows on here is not what I saw in practice. They were MUCH higher in my Remington 700 Sendero, it could be that it has 26" barrel. Shot well, with good groups. Over all, I'm pleased! Just watch your speed.

  • 1
    Imr 4955 enduron

    Posted by Philip Richardson on Oct 21st 2021

    This Is the worst powder I’ve tried to develop a load for, in the .284 win, ladder speed test was up and down so much it was hard to believe it was the same powder in each case! It developed serious signs of pressure within .5 g! I couldn’t get the velocity i wanted without excessive pressure in my custom rig! Es poor too.

  • 1
    IMR 4955 issue

    Posted by Bob Aguiar on Sep 17th 2021

    I loaded a few 270 Win shells with Nosler 165gr 56 gr of IMR 4955. Should be 1gr below max. Blew the primer and ruptured the case. Guess I should have started 5 gr below max but with bullets, primers and powder shortages I cut corners. Mistake

  • 5
    300 win nag

    Posted by Frank Adamek on Aug 28th 2021

    Got good velocity and accuracy. Stopped 1 1/2 grains short of max for 300 win mag with 180 grain. Very satisfied

  • 5
    IMR 4955

    Posted by John on Aug 9th 2021

    I just finished firing three loads in the 25 06 using a 117 gr. Hornady btsp. Starting with 51.5 grains of IMR 4955 then 52.5 and 53.5. Not max load but the faster I pushed it the more accurate it got! Also no signs of high pressure at all.