Half a Ton

Half a Ton

In the United Kingdom, a slang term for 50 pounds.
References in classic literature ?
The Rodman Columbiad threw a shot weighing half a ton a distance of six miles, with a velocity of 800 yards per second-- a result which Armstrong and Palisser have never obtained in England.
You understand that we have nothing to do here with projectiles weighing at most but half a ton.