Re: .308 winchester
Anytime a pre-64 Winchester is refinished or altered, it forever destroys the collector value, and relegates it to being a "shooter". The graded condition can not "excellent" for a refinished gun. By established grading standards, your rifle is 0%.
Now, and as a "shooter" in a decent caliber, I suspect that it is worth approximately $250 to somebody looking for a decent hunting rifle. Trade-in value is likely to be considerably less.
Real Men own and shoot a Winchester SINGLE-SHOT!