powder burn rates and humidity

[Lefty7mmstw]

Humidity and Powder Burn Rates — What You Need to Know « Daily Bulletin

I have never thought about this much... Anyone have velocity data to show how much we are talking about?? I've never bothered to write down my barometric pressure or humidity on reference or l.d. groups...

 

[Bullet bumper]

I have been aware of this for many years . I have my powder in original tightly capped containers inside an old well sealed non working refrigerator . This keeps the cans somewhat isolated from the temp and humidity changes outside .

 

[Zerk]

Are we talking shooting or storage?

I record temp, but not humidity in my logs. BUt ya, I am sure if could be an issue.

As for storing powder, you should store ammo with the same concerns.

Mine is not hermatically sealed in Funk and Wagners backyard, but I get the point of doing it. I am not in the south either.

 

[Bullet bumper]

They are talking moisture ingress during re-loading and storage of rounds .
Re-loads are generally not as well sealed as Commercial rounds and definitely not as well sealed as Military rounds . So the problem would vary .
The way powder manufacturers sometimes store bulk powder in large magazines at the factory ( silos ) humidity would also affect that powder before it's canned and sold .

 

[Dosh]

Lefty, I've solved the humidity problem. I live here in the Az desert where 10% is a sweltering day. Keeping powders indoors with the climate control and the can lids tight is about it. Still would like to see data.

 

[Trnelson]

There are several controlled and detailed articles out there. This one is most germaine to long term powder storage in un-controlled environments. The article pre-dates the commercial availability of the new extreme and temp stable powders. How those are effected, I don't know.
I control temp and humidity in my reloading room and ammunition storage.
http://bulletin.accurateshooter.com/2008/09/tech-tip-humidity-can-change-powder-burn-rates/

 

[Bullet bumper]

What's the God dam Germans got to do with it ? Sorry I could not resist .

 

[Dgd6mm]

What's the world coming too?

 

[Trnelson]

What's the God dam Germans got to do with it ? Sorry I could not resist .

Nothing, other than my **** autocorrect, it got me again.

 

[Bullet bumper]

Don't you remember Jacki Gleesons line from smoky and the bandit . Too yoind I

 

[Trnelson]

Don't you remember Jacki Gleesons line from smoky and the bandit . Too yoind I

nope. That's just a little ahead of me.

 

[DMP25-06]

"The fact that you are a sheriff from Texas is not germaine to the situation ."

Sheriff Buford T. Justice's reply was " G.. D... Germans got nuthin to do with it "
From: SMOKEY AND THE BANDIT , starring Burt Reynolds , Jackie Gleason , and Sally Field . 1976 .

 

[Dgd6mm]

One of the BEST movies ever....

 

[TheDeicide]

Are we talking shooting or storage?

I record temp, but not humidity in my logs. BUt ya, I am sure if could be an issue.

As for storing powder, you should store ammo with the same concerns.

Mine is not hermatically sealed in Funk and Wagners backyard, but I get the point of doing it. I am not in the south either.

Where did that line about hermetically sealed come from? The only place, time, and person I've ever heard use that is my HS English teacher when he referred to their dictionary as "The Book of all Knowledge". I know this isn't shooting related but inquiring minds want to know.