Thanks for the suggestion and yes I have considered that but I don’t always stalk with my 308. I’m not sure that they are available in the uk. Lothar Walther used to do them but no longer list themsrvet have you considered the possibility of using chamber adapters in your .308win. These allow a .32acp or 32 S&W long pistol cartridge to be fired through your rifle barrel.
They can be a bit awkward to load in a bolt action rifle and you will still have the difficulty of sighting associated with a scoped rifle plus the difficulty of safe manipulation of the rifle if one hand is occupied with your dog, but at least you will have a round with much reduced velocity and also a choice of suitable bullets that would be less likely to over penetrate or ricochet.

