Re: Storing rifles, long term, in foam
One of the Pelican manufacturing plants is located in the city I reside. As I work for dealer of their photographic cases I have dropped by their plant on a number of occasions.
I asked one of their techs about the long term storage issues...I have clients who use their product to store $$thousands of dollars of photographic gear.
The tech said that it isn't the foam per se...it's that if their is moisture in the case, the cases, being watertight and airtight doesn't allow the moisture to dry...so your guns/cameras are going to be in contact with moisture as long as they are locked in the cases.
As long as you ensure their is no moisture you're good to go. He recommended that if I had a customer who was going to store cameras long term in a Pelican case to throw in a moisture muncher (desicadent) for a couple of days before actually storing the gear.
In the 15 years we've been selling Pelican products I've never had a customer claim that they've had any issues with moisture.