I am very grateful for the advice and guidance all of you have given me.
and I'm impressed with all the information you retrieve from history books.
I have several years shot salute on national days.
I used dynamite far in the mountains.
Next time it is with black gunpowder, and much safer with the right routines.
I'm impressed by the noise of 40 and 50mm thundermug when I found the right powder and wadding.
I can post more videos of the salute with thundermugs when they are ready if all you want.
mvh
Oyvind