I was using the partition golds until this year. I liked them alot, and did hit a big buck at 200yards one year with them. This was the second shot on him since he ran off after the first hit then stopped again. Second bullet did major damage also. I switched to the remington accu-tips this year though. I tried hornaday sst, winchester xp3, partition golds and accutips at the range this year, and found the accutips fly best out of my gun. I wish my groups were as tight as yours though, those are impressive!