What did he load in it over the powder, anything? What is the total depth of mug?
Looks cool and simple enough...
NitroSteel
Thundermug as shown in the video has 33mm drilling and is 15-16cm deep hole .
I use about 10 grams rockwal isolation over the powder, are not packed hard.
A 35mm film canister with gunpowder.
Powder has a grain size of 0.3 to 2 mm.
yes I'm afraid to lose my hand, it is a loaded weapon!
mvh