I posted a thread "G.I. 12 Ga. Brass Case 00 Buckshot & Box" yesterday and Charlie was good enough to steer me to this thread. Just to try to resurrect this thread I'm going to re-post my stuff here. The box is one which is not listed here anyhow so maybe it will and some info to the thread as well as some new interest.
These are WW II vintage and evidently even back then there were bleeding-hearts types who thought it wasn't nice to shoot at the enemy with shotguns. To shut them up the Government had Winchester put "FOR USE IN HUNTING SMALL GAME" on the box.