I bought a 1950 16ga model 12 the other day that was covered in cosmoline. The gun looks unfired and has only one tiny spot of surface rust near the ejection port. When I went to inspect the barrel I was surprised to find it stuffed from end to end with home insulation soaked in cosmoline as well. The bore is in perfect condition now that I have cleaned all the gunk out. Has anyone else come across this method of storage? Best-JB