Slow-motion gun malfunctions - GIF and video

Slow-motion gun malfunctions.

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8:40 source video:
https://www.youtube.com/watch?v=1e-i0wD0JbU


Previously:

https://www.homemadetools.net/forum/...612#post123362
https://www.homemadetools.net/forum/...986#post137710
https://www.homemadetools.net/forum/...407#post122170
https://www.homemadetools.net/forum/...9554#post89546
https://www.homemadetools.net/forum/...399#post146648

It'd be instructive to hear from one of the local gunsmiths what's the matters here, please.

Thanks, I agree neilbourjaily. I would like to hear from a couple gunsmiths.