There are a few great fusion 360 parametric box generators out there.  However On-Shape didn't seem to have one so when I needed a box for some loose ammo I designed one.

All screws are 3mmx30mm screws. One side should be loose one side should require you to screw in (not threaded, just tighter to hold the screw without glue).  Prints great a .3 layer height for me.

Includes a cartridge insert for 45 acp but can be used without it.

Here is the link (hinges may get wierd if you change the dimensions too much) [https://cad.onshape.com/documents/acdc13e0957755920bc84852/w/182f7a09cc07f86e44f408e2/e/75a4526b149e5fb1a2276b35?renderMode=0&uiState=64514d45ffdebc0ee0ccd1bf](https://cad.onshape.com/documents/acdc13e0957755920bc84852/w/182f7a09cc07f86e44f408e2/e/75a4526b149e5fb1a2276b35?renderMode=0&uiState=64514d45ffdebc0ee0ccd1bf)