GDG- Live firing video

[Bob Coffman - Info From Data Corp.]

There was an episode of Unsolved History (I think?) where they "found" the
map that showed Confederate burials from Pickett's Charge...  Anyway, the
"new" insight into the failure of the charge wasn't so great, but the
demonstration of cannon fire was very good.  I'm one of those "gotta see it
to get it" type of folks and that really opened my eyes as to what those
weapons were capable of.