Gun Rust is an owner’s worst nightmare.  You have saved for a long time to finally be able to afford that great shotgun for the bird season.  You took your time picking it out.  Of course you had your favorite gunsmith fit it for you.  Everything is a go.  Before you left the store, you decided to get a fancy case to keep your gun  safe as you travel.  You go home, put it in the closet and are devastated when you pull it out to find...