Stone Cold I have the Optima also. I have had it for two years.When I first started shooting it I couldnt get a good group either, then after about 60 rounds it really started to come around. I use the tc shockwaves 250 grain bullets. I have found that my Optima likes 80 grains of loose ffg triple 7. I have a bushnell dusk to dawn on it now. I get great groups now. I also had good luck with the 300 grain sst shockwaves. I perfer the 250 grain bullets however.
I think after you get her broke in it will come around for you. You just got this rifle right???