Thanks for the replies all. I went to the range yesterday with the gun and was getting around two moaning with five shot groups. But I did get several time three shot groups hovering at one inch. That was with a 9 power Nikon.
I guess my real question should be should I expect a 50 to 100 fps reduction compare to advertised velocity? I don't have a chrono and don't know anyone with one. By the way even at 100 fps less than posted that is still 3050 fps. Compared to a 270 with 150 grain factory advertised at 2850.