firework in a shotgun shell in Australia

[perentie]

When I was a kid I got the empty soda gas cylinders for making soda water . Think I still have that old soda bomb thing somewhere. The cylinder is a neat fit in a 12 gge shell. I drilled the neck out and filled it with black powder, put in a piece of blasting fuse , sealed it with wax and stuck it in a 12gg shell.with no shot or wad and a pinch of black.
Fired it off . sometimes it went bang up in the air like a birdfrite sometimes not.
Things we did as kid. Of course not to be recommended nows

[on_one_wheel]

I've pulled one apart.

Here's the basic components.

10.5 grains of smokles ball powder
19.5mm x 6mm special wadd
17mm x 43mm cracker with 4 to 5 seconds of slow burn fuse
Cracker weight = 138 grains with glue and wad.

All in a standard looking hull.

As you may be able to see, the top of the cracker is sealed with hot glue.
The wad and fuse is also glued at the base with hot glue.

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Anyhow, I've put it back together and I've still got all my fingers