I use the MTM 308 length for 22/250, but the ones I use have a molded hinge rather than a standard style of hinge. My loads are a little shorter than yours though and don't hit the lid upon closing. They won't work in a 30/06 length case as you noted.
I'm searching for boxes now for the 6.8 and 22/6.8 that I have, nobody has anything on the shelf nearby that will work, and empty brass gets lost in a 308 length box.
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