Gun Powder shelf life

[Blan Dam]

So I started reloading shotgun shells for me and my pops. He dug out a bunch of his old stuff including powder. I was curious if there is a shelf life on powder. Most of it is probably about 25 years old. Should I scrap it or is it fine?

 

[Otter]

Powder can last a long time if properly stored, meaning cool and dry. If you know it was stored this way, I would say it is okay.

I've never witnessed this, but I've heard bad powder has a different smell. If you have some new powder, might want to do a sniff comparison test. If in doubt, I would replace it.

 

[Mark W.]

Powders vary. But as a general rule in my experiance (I've reloaded for 44 years now) using both fresh bought and at times very well aged powder. If the containers are closed tight and the over all conditions cool and dry then I have had excellent results with powders as much as 30 years old. These were mostly common IMR powders.

 

[Sheldon]

Go by smell and looks to determine if powder is bad. If it smells sweet you're ok, but acrid is bad. If it looks rust colored and the texture is deteriorating, then it is probably going bad too. 25 years is not old for smokeless powders. Odds are it is fine.

 

[Blan Dam]

Cool good to know. I couldn't tell the difference between the new and old in texture and smell. Plus it's been stored in the garage. Should be fine, Thanks.

 

[BigBull 301]

I'm still handloading some H4831 from WW II. It's a lot older than I am, and works harder! LOL!

 

[Blan Dam]

So almost sure the powder I'm using is worthless. Follow the recipe it barely has enough power to shoot the shot out.