Many years ago, I did the same thing with a Black Diamond XR. A friend was sighting in his Model 94 30-30 and I had the BD. I shot three rounds at 75 yards and it was such a tight group in the bull. I was so pleased. Needless to say, his 30-30 did not shoot quite that tight a group. But he was shooting fast, compared to me.
I have the Optima and its accuracy just pleases me so much. It seems to shoot about anything I want to put down the bore.
Nice shooting with the Accura. I want to handle one of them if I ever get in a store that has them.