my loading building sits on the edge of my rifle range and isn't air conditioned. (yet). it's been 100% humidity for the last 3 weeks and when i went out to do a bit of loading i noticed a little bit of rust on one powder measure. i cleaned it off but got to thinking what i could do to prevent it. Oil or wax would gum up the works. finally decided to try a spray can of TFE i had sitting around,. Gave everything a nice coat of that dry lube and it seems to have worked quite well. i imagine most any dry lube would work

eezox. a bit pricey