I can't really think of a reason why the piston returns to the original position!! any ideas?? I made a transparent QEV coaxial cannon out of the preform of a bottle. This was inspired by a Nighthawkinlight's project, although I added a transparent barrel and had to make everything work with a wooden piston and o-ring seal. The breech seal is just a piece of rubber from the inner tube of a bike tire. Thanks for watching!

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The Azul Unlimited dive expedition to Cabo San Lucas is going to be epic. There are still a few spots. See details: https://azulunlimited.com/baja-dive-expedition-2023/ ??Subscribe: https://bit.ly/2y7Se24 ? Join the Azul scuba community: https://www.patreon.com/azulunlimited I'm sharing behind-the-scenes scuba and vanlife adventures. This is a place where we can support each other as an online scuba club. Find us on IG/FB/TikTok: Azul Unlimited https://azulunlimited.com/

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