I did the testing years ago with a friend, Raymond Hutcherson. We both doubted that unburned powder would leave the barrel- having both observed the gun flash in front of the muzzle and sparks trailing to the ground.
I put a DB bed sheet on the ground, in front of the bench and barrel's muzzle, held down with rocks and bricks. The gun was fired over the white sheet. We then removed the rocks, carefully folded the sheet in half to HOLD the residue, and then lifted the sheet up so that we could pour the contents out in to a metal ashtray that had been wiped out before the test.
Ray was a chain smoker, so He volunteered to light the Pile of stuff we piled together in the ashtray, using a pocketknife blade to push and scrape the bits together. I REPEAT, neither of us was expecting the pile to ignite, much less burn like powder.
We were both AMAZED, then, when it not only ignited from applying Ray's cigarette to the pile, but that it went " Poof" in our faces! I think we both said words to the effect of, " HOLY S$%t!" That is how surprised we are with what happened.
My best memory( this happened back in the late 1970s) is that the particles we got off the sheet were light brown in color, NOT BLACK, or at least a large part of them were. That is why I was not expecting anything to happen when Ray touched off the small pile with his cigarette. Ray took the whole experiment much calmer than I did. We laughed about the results, but his attitude was that we just report the test results to the members, and be a bit more careful about letting people smoke near the firing line after the range is closed. :idunno: :thumbsup:
Every civilization learns what it needs to know to survive. In time, lessons learned are forgotten. Then a new generation is forced to relearn old truths.
I found this to be true about Tracking- visually reading Tracks and "sign" of man and animals. I have been doing it for more than 50 years, learning with every new set of tracks I follow. But, even among hunters, who should know better, IMHO, I am considered " Odd" for my ability and interest. Oh, they don't mind having me around when they need to track down a wounded deer- but otherwise, I make them a bit nervous. They realize I see things and understand things that they don't.
Its been that way with Tracker/Scouts down through the ages.
Perhaps its time for someone younger to do this simple powder test, again.