I spent a bunch of time finding a bullet that shot good in my rem standard 700 in 300 win, I started using a berger 190 vld hunter and at 200 the groups are the tightest I have seen in that gun, 1 1/2 inch or less.As I started to reach out to 600 I was more like 10 inches and in 2 separate groups of 3 one was missing in each,finding a 600 yrd location with no wind and flat and not 100 degrees is not easy in so. calif. I have to wait for the conditions best for experimenting and when shooting the 2 groups it was gusty and hot with a lot of heat waves so I stopped, I hope that I can finish my work to extend my range with confidence soon.