50 cal brass black powder
25 barrels all fire at once
with one primer cap
fire rate 100 rounds per minute
manufacture a quick change mechanism to fire, lift the barrel pack out, put a preloaded barrel pack in, and fire again.
Runs the bullets were preloaded on a strip.
Open the breach gate extract the strip and
install another one.
Notice the man at the ammo box is holding
a loaded strip.
I saw them try and remake of of these on one of those gun shows. The real thinkg must have been a hoot to shoot.