[Paal Gulli]

"I see a baby food jar with what appears to be cotton in it. I wonder if it’s gun cotton, aka Nitrocellulose?................

I'm thinking it's PETN. That's what all those blocks of HDP-1 booster are made from.

Burns at 28,000 fps. That's what's in det cord. Great stuff for igniting explosives that aren't shock sensitive, like ANFO.

Might have had an application that didn't call for an entire block so they chipped off the excess with a screwdriver or some such and stored it in a jar to save it for another job.

Or for the 4th of July. I wouldn't use it alone for an anvil shoot but a small pinch in some black powder would get you another 50 feet or so.

[Red Badger]

I had a buddy in the Marines was into that kinda stuff and one day he tried to make some ‘flash powder’. He was a heavy smoker and smoked Lucky Strikes non filtered and he had a saucer sized dish of the stuff in front of him and the ash fell off his cigarette into the dish. It flashed all at once in his face.

He got some really nasty burns and almost got court-martialed..................

[GingisK]

Yeah, PETN is more powerful than TNT or even C-4. Those are more powerful than the grenades. And look! There is a blasting cap right there with those explosives. Now that is a rule breaker for sure.