this is looking very promising! the vergueiro is an overlooked action - dont you think so?
maybe one day I build a vergueiro sporter in 10,75x68 only to see how it works. what is your stock? old M 98

the 7,65x53 is a very interesting cartridge and if I came aross a butchered M 91 argentine mauser there would be a great temptation to start a new project again.