I purchased a MTM cartridge display case and the 450 and 475 No. 2 cartridges are too long to display properly. I will be sending it back. Is there any other display cases listed on the internet that will work? I would like to put a display on the wall. I have cartridges from 450/400 3" to a 4 bore I want to display.

I have no information on this company, but you might try Tatonka Cartridge, 254-848-2550. I believe they make cartridge displays.
Cheers from Darkest California,
Ross