This evening after the wind lay I had enough time to shoot two three shot groups at 350yds., one with the 150gr. (control group) and one with the 165gr.. The 150 group was the same (6.5") and the 165 group was 3.25", so unless this was a fluke I will have to find another excuse to buy a new gun. Will shoot some more to confirm but it's encouraging. The 165gr. had about 5" more drop but if that is the price for tight groups, so be it.

Thanks to all for sharing your knowledge.