nice axe

[Mortblanc]

Test the pipe size first.

It might be different over there, but 3/4" does not slip neatly inside 1" like the video implies. You have to grind the OD of the 3/4" pipe considerably to make them fit.

It is also much easier and more secure to drill the end cap and make the firing pin from a small bolt ground to a point and secured with a tap.

Fact is that in less time and with fewer tools one can make a serviceable example from just the 3/4" section and a block of wood, nail and elastic band.

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Do keep in mind that a 12 gauge shell has quite a kick, and the short section will send itself into earth orbit behind you if you do not hang onto it with everything you have.

The first use for the uninitiated is usually quite an experience and fun to watch with astonished facial expressions and bruised and numbed fingers. Make sure you have a video of that first round!