Question on the tikka fluted barrel with 5/8 x 24 threads. See a few barrels online. Both 308 in stainless, both have 5/8 x 24 threads, 1 is fluted, the other is CTR. I know the weight and contour of the CTR, my question is about the fluted. Is the fluted barrel essentially a CTR contour that has had some weight removed or is the fluted barrel a sported barrel that is flared out to 5/8 x 24?