Hodgdon replied back

TackDriver284

Handloader
Feb 13, 2016
1,797
474
Called and left a message within the IMR website concerning the Enduron powders that went bad a few weeks ago, got an email back and they asked for pictures and sent those to them. Haven't heard from them since, called them again and they asked for another email since the other guy was supposedly on vacation according to the 2nd person and left another email with pictures, no response since. So I emailed again and asked if I was being ignored after calling and speaking with them and after sending them 2 emails, he apologized and mentioned that the powders go bad with heat.
My garage is divided into 2 sections, one side where the A/C duct is connected and is 75 degrees. It's where I keep my powder and other items and the 2nd section which is the 2 car garage is where I have my reloading bench, and tools, etc and the temps are around 80-85 in the summer. Not sure if 75 degrees has that much of an effect since no powder other than Enduron and one can of IMR 4831 went bad in my last 25 years of reloading. The guy said that they did not have any Enduron 7977 at the moment, and asked me I wanted any other powders besides that, since H1000 almost has the same burn rate as the 7977, so I asked for the H1000 since its very popular and temp stable. A package arrived at my door just now and in it was 3 lbs of H1000. As of last week, I relocated all my powder and primers to a closet next to my office where its 70 degrees.
Thank you Hodgdon.
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Lazy Bushman

Beginner
Apr 17, 2022
23
26
Your temps are not the reason for powder going bad. I spent the first 38 years of my life in Townsville where during summer, the temp is regularly around 95 as an average with nights getting down to 82 and never had powder issues. I've also lived in Wellington, NZ where top temperatures in Winter might get to 35 if your lucky, again no issues with powder going off. I've never experienced issues with primers either. Are you keeping your powder stored in the original containers? Are the lids on tight? Temperature has little effect on powder (for the most part), but rather moisture is the big powder killer. One of my powders that I am currently using is from a bottle I opened about 12 years ago and still going strong. Did the powder start off good and go bad or was it bad when you opened it?
 

TackDriver284

Handloader
Feb 13, 2016
1,797
474
Your temps are not the reason for powder going bad. I spent the first 38 years of my life in Townsville where during summer, the temp is regularly around 95 as an average with nights getting down to 82 and never had powder issues. I've also lived in Wellington, NZ where top temperatures in Winter might get to 35 if your lucky, again no issues with powder going off. I've never experienced issues with primers either. Are you keeping your powder stored in the original containers? Are the lids on tight? Temperature has little effect on powder (for the most part), but rather moisture is the big powder killer. One of my powders that I am currently using is from a bottle I opened about 12 years ago and still going strong. Did the powder start off good and go bad or was it bad when you opened it?
Yes, all my powders stays in the original containers until empty and I discard the containers.
Yes, all lids are always tight and always kept dry.
Those Endurons were never opened, the 4166 had a huge hole on side of the can and once I opened the seal, there was a rustic color fumes in the cans of the 4166 and 7977. The seal crumbled when I touched the seal on the 7977 to remove it, and it all crumbled into the can. The old IMR4831 was opened a few times, but i had it for like 20 years, it was that old metal can.

JXIZeha.jpg

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ST1dsSXl.jpg
 

DrMike

Ballistician
Nov 8, 2006
35,188
1,737
Yes, all my powders stays in the original containers until empty and I discard the containers.
Yes, all lids are always tight and always kept dry.
Those Endurons were never opened, the 4166 had a huge hole on side of the can and once I opened the seal, there was a rustic color fumes in the cans of the 4166 and 7977. The seal crumbled when I touched the seal on the 7977 to remove it, and it all crumbled into the can. The old IMR4831 was opened a few times, but i had it for like 20 years, it was that old metal can.

JXIZeha.jpg

mddsYDHl.jpg

ST1dsSXl.jpg
Pretty dramatic evidence of a chemical instability.
 

SJB358

Ballistician
Dec 24, 2006
31,355
654
That's pretty cool they took care of you like that Mark.

In all my years I haven't lost a pound of powder, yet. At today's prices I'd likely shed tears.
 
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