Can you split ammunition stacks in Resident Evil 7?

On my second playthrough I easily reached the ammo cap for both pistol and shotgun (30). Is it possible to split stacks, for instance taking out 10 shots and storing them in the item box?

The inventory space is limited even after the backpack upgrade (+4 slots).

Solution 1:

No, it's not possible for ammo. However, it's possible for other items.

According to official game manual one can store into item box single item from the stack. So you can use this function on your ammo stacks repeatatly until desired amount remains in your inventory.

Tests show, this works for gunpowder, solid fuel.