That will certainly be a very handy little rifle & round to boot when climbing hills or snap shooting in thick forests over your way Louis!
Certainly hope you can score an old period scope to set it off - hopefully some here will spot a likely candidate for you & let you know.
Yes the mounts may take a bit to work out, but you never know it may just fall in your lap like the rifle did!
Don't forget to post the loads when you get around to it too please!
Cheers mate & happy hunting when you get the chance.