looking at those 357 rounds on the 223 brass has me thinking a 23mm version in 9mm would be pretty slick on a tokarev m57. i cant seem to find a 9mm barrel to rechamber any were for one however. hell I could do a 9x25 on the thing .
was considering making one but im not sure about the barrel material or hardenss on a pistil with the lugs in the barrel an having the lug for the link would require a really big OD blank to staret with. i f I make one its going to be extra long. Like 6inches long with a extended bushing an built in compenstater etc.
i nned to look at what the 45 auto guys to to make barrels an go from there.