Shooting at a seamine with a 20F2 Mitrailleur 20 mm with a big explosion

The first time i shot at a seamine during my service at the Dutch Navy.
On Board of Hr Ms Alkmaar M850 (minesweeper) i had the chance to shoot at a WW2 german seamine with the 20F2 Mitrailleur.
I hit it and a huge explosion was the result.