Someone must remember that in those times keeping lead at the perfect temperature prior to pour into the molds was more difficult to control because there were no electric controlled thermostat furnaces. Swaging was a more easy controlled way to make a huge quantity of bullets.
My 2¢.
Watched it. It was good except for that part. Is it possible that the mass production techniques at the time could not produce a quality bullet using molds? They mention swaging as superior (at the time anyways).
How are lead cores and cast bullets (such as for 22LR) produced today? Molds or swaging? I'm not referring to the "boutiques" that produce several thousand a day (they use molds), I mean those that produce hundreds of millions a year.



























