Reloading in wet weather vs dry weather

[boyou]

Hi guys,

I was reading that earlier post on the Australian Outback ammo and humidity and so on.

Like everyone knows, when you get a solid bought of rain the humidity really hands in the air for a few days after. Should this matter if you're doing reloading?

I don't know if I'm way over thinking this but was wondering if sealing up your cartridges in very humid and then very dry weather would cause any difference in them?

[Aster]

Apart from the common sense stuff like not leaving your powder out for extended periods of time in humid weather, I can't see a problem with it.

I've never given it any consideration to be honest, or noticed an issue as a result...

[Baldrick314]

The only impact I've ever had from the weather on reloading is when I worked up a load in the winter and come summer it showed signs of excess pressure that weren't there during load development

[Swarm]

I think you'll find that the talk about the Australian Outback ammo is that the powder actions consistently regardless of temperature or humidity so your muzzle velocity is the same in different conditions.

Nothing to do with what/when/where/how it was loaded as far as I know.