12G 25 Shell lockable Ammo Box

For years i've had 12 gauge shotgun ammo but no suitable container to store them in, as i've gotten into clay pigeon shooting some of that ammo has a use but again no suitable container to transport them in.
So i decided to design my own.

I've designed this ammo box to hold 25 shells and contains a hole for a padlock so it can locked. (in australia ammo boxes must be lockable in tranzit)
included are 2 lids, the normal lid and a lid that's 3 inch compatable. (not 3.5 inch compatable)