Here's an interesting bit of videography detailing the elaboration of some 11mm pinfire rounds using 45 ACP brass as the basic case for forming.

https://www.youtube.com/watch?v=abviqBSZN80

And here's the video on testing, including post range trip diagnosis.

https://www.youtube.com/watch?v=i-NExsk8TtY

I've been intrigued by the pinfire system for some time. It's good to see someone else so afflicted - and with the means to scratch the itch.

I suspect this system would be very adaptable to the 11mm revolver or other pinfire system rounds that one can use a regular modern cartridge to form from.

https://www.youtube.com/watch?v=7RsonzmtAX0

I don't have the equipment required (wish I did) but it's interesting. I note that he didn't really have any lube during the loading.

I noticed that as well. Seems like a grease cookie underneath the slug would at least leave some lube for subsequent shots. Small primer cases bored out for a percussion cap carrier like the other video shows should work dandy. Although I don't know how the extractor groove would affect the placement of the pin. Makes me wish I had a chance to play some with the idea.

in anticipation of your experiments.