That is a really loverly little Rifle.
I collect Firearms and enjoy the Sporting Rifles of about the turn of the Century most.They were made by Craftsmen for owners who spent a great deal of money in those days for something that has lasted several lifretimes.Holding a old Firearm and imagining the owners who have held it before you,the adventures and lessons it has partaken in,is much of the attraction to me.
I would suggest scrubbing the bore with Hoppes #9 and a Bronze bore brush.Back when that Rifle was made the priming in Cartridges was corrosive,the bore might be damaged or it might not.Worth having a look.