This is the 40mm whistling shell I designed to be used in a potato cannon. My Video: https://www.youtube.com/shorts/pMmpdp4Tr0M If you liked this design, please take the time to follow, like, and subscribe to my social media channels: https://www.youtube.com/@tntbahttps://www.tiktok.com/@trynottobreakanything Special Thanks to The Guy of all Trades for helping me test this design.https://linktr.ee/guyofalltrades
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