Does humidity affect powder charges??

[Cheyenne Ranger]

Howdy All,

Was sitting here along the coast in The Republic and was wondering what our 90% humidity does to the powder?  Now I don't leave it out just from the container to the reloader and back when done reloading but I bet that if someone were to leave it in the reloader for a spell the powder would be affected by high humidity.

Any experts out there can help me on this one?

Ç (who's sitting inside since it's 96* right now at 4 pm) R

[44 Man]

Been wondering the same thing myself.  We have been having over 90% here in mid-Michigan.  I'd like to reload some 45-70 but I have to use a knife to cut through the humidity in the garage just to get to see the bench!  I always wondered if cartridges loaded in the summer in high humidity shot any different than those loaded with the same charge in winter with '0' humidity?  Guess I don't have enough patience to test that one out!  44 Man

[Cheyenne Ranger]

Parts of CAS I enjoy are the reloading and even the casting.  It's not too much fun when, like today, it's 101* and humidity of 60%.  

I find I"m staying up later and later to get my chores done--just too hot during the day.

Guess I could take that stock off the mod 99 and get ready to whittle it down later in the day.

ÇR