Daryl,

My Ruger was under the couch in the living room of our 800 square foot house in Columbia, SC. Very humid and hot in the summer time.

I was(am) meticulous about cleaning my BP weapons after firing them using hot soapy water and stripping them down into all individual parts as BP residue gets everywhere. Down into the trigger group, back into the hand, etc.

The Ruger was loaded into a clean weapon. This was in the days before BP substitues. It was loaded with real 3F black powder. Hodgens I think?

Vlad