I know a guy that makes some. I believe other on the site has bought them.
He makes them for the Edge and 408 cases.
here are some pictures:
the case in it is a 7 rem mag with a 160 accubond seated to neck junction. It is actually the one for the RUM cases. My brother uses it for his 7 RUM.
All folded u, uses tuck flaps instead of Velcro.
Here is one for a 308, or WSM
If you want his contact info let me know.