For those of you that have not tried Montana X-Treme Bore Conditioner or Slip 2000 Bore Oil I think you might be in for a real surprise.
http://www.montanaxtreme.com/product...oreConditioner
http://www.slip2000.com/slip2000_lub...ory=lubricants
Either of these two products will provide the protection and shooting qualities that you might be after and they are both synthetic.