So let's say that you have a whole bunch of long guns and they are to be stored in Doskocil plastic Gun Guard hard cases on a cement slab floor. To keep them from contact with the cement and possible dampness issues you put down a couple of 2"x4's to provide some air space and circulation and then stack them 8 deep.
Nine years later you remove them for cleaning and relocation. Here are some photos of the case that was on the bottom of the pile, and the only one to be damaged, caused by weight and summer heat. But the good news is that the shotgun inside is fine! Even the case may be salvageable with
the application of a few bricks in the right locations.
Attachment 154791Attachment 154793Attachment 154794Attachment 154792
In retrospect, a piece of plywood across the 2"x4"s would have been a good idea. FYI