I use the same Flambeau boxes for my 625-8 JM Special loaded moon clip storage.

When I empty a loaded moonclip, I put the moonclips with empty cases right back in the box they came from. It helps you to organize, and protects the moonclips from any damage. When I get home, I set aside a time and sit down with my Moonclip tool and reload them. They are marked and have a special place on a shelf in my shop where I can tell at a glance that things are "ready to go".

The Flambeau boxes are inexpensive, sturdy and available in a proper size for the clips. What's not to like.

Walmart carries them, Bass Pro carries them, and Cabelas has the same thing under their own brand name.

NOTE:
The boxes are supplied with only 1/2 of the number of dividers you may need for any given box. They idea is you can put different fishing lures and tools in the box along with the smaller flies or lures. There is a phone number on the boxes label. If you call that number, you can buy the needed extra dividers for a very reasonable cost.

I have a half dozen of these boxes and REALLY like them for the purpose.

They also work perfectly with the "plastic" RIMZ clips.

FWIW
Dale53