Thank you Raimey for the info. I have yet to clean the shotgun as I was instructed not to and leave it the way it is by a friend. I did get to shoot the shotgun last year as I used it when we went squirrel hunting. I don't know when the last time the 7.7mm (8x57) barrel was shot. I intended to use it as a bird gun for Quail hunting here in New Mexico. At this point I think I might be leaving this one in the safe for awhile.