opoefc, that would be quite the find! You'd have to wonder if someone wasn't trying to make a backdoor transfer. But yes, I'll dump the cases out first; about time to make a run to the scrap yard.
Don't forget to take the guns out of them before you toss them! I say that because I once noticed a shopping center dumpster full of trash from a sporting goods store that being remodeled and found a Winchester commerative box with the Winchester still in it ! Ed