An interesting topic.
I have been reloading for about 40 years. I used to cast my own bullets using wheel weights, but when cast bullets became readily available I quit.
I have read some articles about swaging, but it seems to have been popular from the 1950’s or earlier.
I think that a lot of the bullet technology that is common today started with guys making and testing their own designs.
I would be a great hobby to pursue, especially if you could use salvaged 22 cases as jackets.
Are there any companies still making equipment and supplies?