i recieved a black powder gun from my wife about a year ago. well being new to black powder. i didnt listen to the advice of some other rookie black powder shooters to wash it with soap and water.well they were obviously smarter than me( that doesnt take much). it just sounded like a bad idea. water and metal. well now my gun has corrosion all over it. mostly in the barrel. is there any way to remove it or is it now just for show. thanks in advance for any advice.