I'm not sure I am asking the correct questions so please excuse the rambling. Let me know if it is incoherent. A buddy of mine recently gave me a Hart #5 contour barrel chambered in 300RUM. He had it on a Nesika action. Are there any actions that are dimensionally similar and cheaper than the Nesika? I need a LH action. I think the Borden Timbeline Magnum is pretty close as far as tenon diameter and TPI but how much work to make them work together?