Luger barrel shank dimensions?

Gentlemen,


I am considering rebarreling a P08 to accept the 7.65 Parabellum cartridge, but first I need to know more about the barrel shank dimensions. What would be the minimum OD required for this section of barrel? This is a silly question but I still don�´t have the pistol i�´m going to work. And no. I can�´t order a replacement barrel.

Also, would a .303 barrel accept .32 ACP buletts our even 7.63 Mauser ones?


I thank you in advance for all your insights...