As far as I am concerned a loaded round "left" on the ground is an accident waiting to happen.

Last thing you need is to have some 308 roll off the table and pick up one of Rumblers fire breathing reloads and run it thru some ww2, or earlier, rechamered 308 military rifle.

The results could be, spectacular to say the least.

If I find rounds in a box, they go to the office.

One on the ground is a different thing.