I would like to rebarrel my Stevens 200 to a 257 WBY Mag but I've never heard of anyone converting Savages to Weatherby rounds. I know these cartridges have an odd shoulder radius and freebore(I don't really know what this is but I hear it discussed with Weatherby rounds) Are there any problems or pitfalls associated with this swap or would it be just like any other rebarrel job. If so, does anyone know where I could get go/no go gauges for this round? Thanks for the help.