I bought a 700 VSSF a couple of years ago with the intent of making a sub 1/2 inch rifle. I loaded and loaded and loaded..... I had the rifle pillar bedded--no change. The last load before ordering a new barrel was a 52 gr Berger with Varget powder. Shoots in the four's. Best group was .39 (4 in about 1/4"). This is the ONLY load it likes. I'm seating the bullets .01" off the lands with no improvement by varying the depth. This is the pickiest rifle I've ever loaded for but it sure is sweet when it finally comes together. And, I only need one load!
Hope this helps.