This is my first post here but I may be able to provide some info in wood shrinkage. I also play stringed musical instruments (36 string chorded zither) and I can say for a fact that wood shrinks in dry atmosphere. What we musicians do is put a Humistat in the case of our fine instruments when humidity is low. If I don't do this my instrument goes extremely flat because of shrinkage. All a Humistat is, is a water tube that meters out moisture and gives the wood a drink. Am I going to put a humistat in my gun case? No! and I'm not taking the stocks off of my fine Remingtons for separate storage. What I'm saying is that we gun owners have a problem with storing our shotguns. We have two different materials steel and wood. One likes moisture the other doesn't. What I do is compromise. I store my fine shotguns in the open air and make sure they get a good wipe down with fine oil every so often. I also make sure that I don't let finger prints remain on the steel because of the acids in our skin oil.
