A sprinkle of smokeless powder in the ashtray is funny and nobody gets hurt.
Blackpowder 9mm. Fired it out of my Beretta at Eagle Creek. Click, bang, poof of smoke and crap. I extrapolated the charge from .38, reducing the charge per the difference in shell capacity, then adjusting for pressure.
I am trying to figure out black powder .40.
Blackpowder loads in a modern semi-automatic.... not that is a trail i dont think has been blazed before... please start a thread with your experiments... this is very interesting to me.
Off to the general section!