Question: If you were going to build a semi-custom, and what I mean by that is that you are going to use one of these two actions and rebarrel them to a different caliber but one that WILL actually fit either, which would you use and why? Which ACTION do you think would be more accurate from the box, and which do you think is more "stout?" Your options are: The CZ550 Safari Magnum OR the Ruger Safari Magnum. The caliber will be a .338 Allen Xpress (aka .338 Lapua 30 degree Improved). Thanks for your "enlightenment!"