Interesting concept, never tried it, but that would be nice information to know if it does work reliably.
Kind of like the modified M-14 mags. for the ArmaLite AR-10...hmmm. :huh:
Good question.
...Was typing this post while you must have been posting yours...well it was still a good question.
Personally, in this day and age of overpriced magazines, I'd invest the funds toward a reliable factory mag. for that Mini- if possible.