I think the best way could be also be the easy way.Go through Remingtons custom shop and order a Remington 700 Sendero with a 28"bbl. chambered in .340 Weatherby Magnum and free bored for the 225 Gr Barnes TTSXBT. I would also add their muzzle brake.
Not many custom built rifles can out shoot the Sendero and there isn't many calibers that can get to 3K with 225 Grains.