I was wondering if people had their own opinion about this topic. I am shooting a ruger m77 mkII. Shooting a 130 gr nosler ballistic tip boat tail bullet with 54 grains of imr 4831 powder in Winchester cases and cci primers. I am only getting around 2.5 inch groups at 100 yards. Do you guys know of a way to get my grouping down our any suggestions for improved accuracy.