Awesome build, wish I had a rifle of my grandfathers to do the same with. Thanks for sharing the info, I've just finished putting together my first long range build in 7RM as well topped off with a vortex PST. I haven't shot it much but am pleased with the results so far. I am going to pick up some 180 vlds to try now. I have been shooting the 168 with great success so far and can't wait to see how the 180's will stabilize but mine is the 1 in 9.25 so I'm guessing the 168's will be better.