Krakow Kid,
I will be interested in knowing what you find out in re to your question. I am needing another, but a very long one. As you can see the one I showed will not let anything with a barrel over 32" stand erect, and if the LOP is long, some of them won't.
I know the irritation that bumping the guns into each other causes. I just handle them very carefully removing and replacing them. Would be much better to have racks, but I can't do that until I get a better place for the longer ones. Some have up to 42" barrels.
SRH