In a few days I should be the proud owner of a tatty English (not Khyber, which are more common here) Martini.

The rifle caught smallpox somewhere down the line and the bore is toast.

Can anybody see issues using .307 Winchester as a rebarrel? I have the barrel and the .308 reamer which I assume can do most of the work. It wouldn't need to be hot loaded I just have the stuff for it. I'd set it up for 130 gr.