This really takes me back to my childhood.
Dad,
Thanks for all of the combustible memories.
(We always put safety first, no was ever hurt during our explosive shenanigans. I learned the importance of respecting the power [and fun] of combustible materials and firearms.)
Video found via [BoingBoing]
The Geek Whisperer 
Oh lord! I hope my grandson doesn’t start in that direction! LOL
This demonstrates how easier it is to murder someone as tech advances.
Is that a joke Poch? Last I checked cannons were a little dated, and I don’t recall General Washington ordering his men to fire the mini cannons.
It struggled to kill an old computer monitor.
I am impressed with the grouping, not the stopping power.