If you are going to build a long range rig that is a high recoil chambering and not a fairly heavy and/or braked gun, you are going to have to come up with a system to call your shots as you will never see the bullet fly/impact due to the recoil. I can watch my bullet all the way to the target with my long range rigs. The odds of needing a second and third shot from a factory tube are reasonably high as not many will hold sub moa on a cold bore, and not being able to see the bullet screws you out of any micro corrections you might need to make. Good luck making reliable hits with your tikka light rifles beyond 500 or so, things really start to change beyond that and not many factory mags will let you seat a vld out where it needs to be.