I have found that a good cleaning will keep your rifle shooting real well for many years to come. What I'm about to tell you about is my technique and what has worked best for me. I always run a swab thru the bore while the gun is still at the range with solvent on it. Usually Hoppes@ or Shooters Choice@ will do.
When I arrive home I go through a process that removes everything from the inside of the bore. The first step is to dry out the bore by swabbing out the Shooters Choice or Hoppes you put in the bore at the range. Now coat the inside of the bore with Remington Bore Cleaner, via a patch. After this is worked in take an old worn out bore brush and wrap a patch around it soaked with Remington Bore Cleaner. You should then scrub the bore about 20 strokes with the modified brush. Since this cleaning compound is a minor abrasive it cleans everything from the bore similar to J+B Bore Cleaner. Then patch out the bore to remove all remaining cleaning material.
The next step is to use a good Copper solvent like Sweets 7.62 or any other brand. A patch applies this to the bore, until the patches not longer come out blue or green.
I then dry out the bore and prepare it for storage. The next step is to apply a preservative to the bore. This can be any good firearm lube. I prefer Tetra@ Oil because of the Teflon base. The Teflon material embeds itself in the bore and aids in an easy clean next time. Another good preservative is just plain Swiss Rifle Grease. I'm not sure how the Swiss makes this but it is the best grease I have ever dealt with.
I hope these pointers will help you keep your Swiss Rifles in good shape.