I never used the factory rounds, but have the components on hand to load your own. Accuracy with them seems to depend a good deal on the condition of the throat of the rifle, and how clean the barrel is. Also matching the weight of the bullet to the twist in the rifle, and not trying to drive them to fast. They also won't turn in the accuracy you can get from a 223 or 22-250, but making 2-3 moa isn't a real hard thing to do.