This slo-motion video was made on 29/05/2021.
The concept was to place 2 cannons (caliber 40mm) directly at eachother and fire them simultaniously (speed 200m/s) , so the cannonballs meet eachother in mid-air. For this purpose I casted bronze cannonballs.
The experiment lasted 0,05 seconds. The balls shattered in countless pieces of shrapnel.
It was the first time in history that somebody tried and achieved this.