We did that at Sennelager in the winter of 83, 2 of us with a spare barrel each and a crate of about 2700 rounds and instructions to bring none back. We were firing fire support from the flanks for a milan pln defense shoot at night. It was snowing and we were burning belts of 200, changing barrels and watching the snow melt and the grass below catch fire from the barrels. I cut a tree or two down that night. Armourer said they couldnt even be used for blank barrels as we had sh@gged them good and proper!