Quote Originally Posted by Mark Kaiser View Post
Yeah, I found the cannonballs velocity claims to be questionable as well, around 4000 fps?, I do know the energy in ft./lbs. would be teriffic, also the ball, being smaller would justify higher velocity and better penetration, but that velocity would have mushroomed the ball, at least a little.
Try 9000fps, or just about twice the velocity of a APFSDS round fired from a LeoII or M1's 120mm smoothbore

if they could do that with a smoothbore gunpowder charged weapon from 1812 in a grassy field somewhere in the UK I'd have signed them up to carry out my ballistic testing programme years ago

(they quote 3000 m/s in the video)

mushroomed the ball, at least a little.
And then some! :D