My grandfather just pased down a Winchester Model 88 in .308 to me for my first hunting rifle. He has claimed that he hasnt shot it sence 1965. So the barrel is very dusty and I would like to know how to strip the rifle and the firing pin to give it a propper cleaning. Online I have only really found posts that lead me to a book that I can buy. I have not located any detail on how to break the rifle down.