Last year, after Dad's funeral, my bro wanted to UPS the old rifle back to Georgia....they wouldn't ship it.
Times have changed...for the worse!!
UPS will ship guns, but they have to be going to an FFL. Sometimes UPS stores refuse to ship them because they are idiots and don't know the right procedures. Best thing to do is get the FFL to send you a pre-printed shipping label. Seal up the package, put the label on it, find a UPS truck and hand it to the driver. Make sure the label specifies signature required.