I am looking at a project gun to get roughly 357 sig type velocity in a cz or tanfoglio format pistol safely without pushing way above design pressure. So from initial thoughts I am looking at either rebarrel a 40sw to 357 sig, the con is that there is a much lower mag capacity in things like steel frame cz’s. I could go based off p09 but prefer steel framed for higher power rounds. Or I could consider a large frame tanfo and consider something like the 9x23 win.
I already have a coned barrel 10mm tanfoglio as well as multiple 9mm cz’s. And other 357 sig pistols, I just shoot the cz/tanfoglio’s better. I could also go 38 super which I don’t have but there seems to be about a 100fps difference in many cases to the sig.
Any experience with 9x23 win in a tanfoglio that would be helpful in guiding me? Or conversely have you tried something similar and wished you simply went 357 sig or 38 super?