Take down your Model 63 into the barrel/receiver half and the buttstock half as explained previously.
Take extra care to protect the rifling at the muzzle of your rifle from damage (which can affect accuracy). A muzzle protector (available at most good gun shops) is always a good idea.
1. Use a cleaning rod with a tip and patch suitable for the size of your Model 63's .22 caliber bore. Make sure the patch is large enough for a snug fit in the bore. Insert the rod and patch into the barrel at the muzzle end and run it back and forth several times. Although it is possible to remove the bolt from the Model 63, it requires special tools and some expertise — and is therefore, not recommended.
2. Push the operating sleeve fully in and lock it (and the action) rearward to inspect the chamber and bore for brass, copper, lead and powder fouling. A normal amount of powder residue can be expected and is not serious. It can usually be removed by repeating step one, using a patch saturated with solvent. If or when fouling should become heavy, it can be removed with a brass bore brush. Dip or spray the brush with solvent and scrub the chamber and bore until the fouling is removed. To prevent brass bristles from breaking off, the brush should be pushed completely through the bore before being withdrawn. Because you are cleaning the barrel with the breech bolt in place it is helpful to use a brush that has a shorter overall length so it is possible to push it past the chamber. Keep the operating sleeve (and bolt) locked rearward during the cleaning procedure.
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