I have a Win Model 255, lever action .22 mag in good condition. I need to replace the barrel, as it has expanded, and not safe to shoot. Does anyone have one or can suggest where I might find one? Also, does any one know the value of such a rifle. It has sentimental value to me (my grandfather's varmit gun), but I want to be careful how much to invest into it to get it to safe shooting condition. Thanks.