Without support for generic containers in code, there is little point to do those boxes as actual items, i think. Maybe later it’s gonna change. I’m leaning towards “virtual” containers, a sort of stacking improvement, similar to magically appearing ammo-boxes in JA2. Let’s say our char is organized enough to not carry a shitload of single rounds just piled-up in theirs backpack, and wraps them in nice paper boxes of some kind.
As a side note: In my times spent for the motherland, if one from my comrades fucked up on the firing range, they would carry home (to the barracks, i mean) a simple bag full of single 7.62 mg rounds, about 5-6 kilos. And very unwieldy. Well, it’s sounds funnier than it is IRL 
