looking for styrofoam trays for 500 S&W

[happy7]

Does anyone know of a source for 500 S&W cartridge packaging. I am gearing up to start selling these cartriges and I would prefer to sell them in some type of disposable packaging rather than the more fragile and expensive plastic boxes. But I cannot find a source for the boxes and trays anywhere.

[NineInchNails]

I googled "styrofoam ammunition box (https://www.google.com/#q=styrofoam+ammunition+box)" also "styrofoam ammunition tray (https://www.google.com/#q=styrofoam+ammunition+tray)" and came up with a lot of results. Same in google image. I didn't track down any one company selling a specific product made for the round in question, but they must exist.