Let's say you're a good shooter, knowing how to shoot great. 1st with that caliber, you need to know what barrel twist it has and use the bullets in the weight category that will shoot great. I don't know what that has, but Some or all 77s in the past had 1:12 and that limits great accuracy to 55 gr and maybe up to 62 gr. bullets as the heaviest that will get stabilized.