Got a Ruger Old Army stainless revolver that needs to go back to the factory to have whatever is in the barrel looked at. Looks like rust and nothing I have tried has touched it. New in the box pistol and the factory has suggested that I return it for them to look at. What are my shipping options? It was delivered to me by the USPS. I checked Fed Ex and they wanted $45.00 for ground and a whooping $95.00 for next day. Any one have any suggestions?