Hi mate,i wipe my gun off with an old cotton t towel,the ones that don't leave fluff everywhere.The oil i use to give it a wipe with is solv-it gun oil,aerosol,just spray a bit on a cloth.If iv'e got the gun wet i dry it and leave it in the boiler cupboard overnight as it's warm and dry and not hot so wont damage the wood.Mine is a walnut stock,i use a walnut oil applied by hand once a month to treat it.The scratch you have can be removed by putting a towel over it and gently ironing it,with the iron switched on,it only takes a minute.Make sure you store the gun somewhere dry,not where there i