That is great advice tho statistically, the 10-shot group is best.
At least 5 tho.
A 10-shot group with plotted POI {a bit tedious but easy to do} will give you a really solid foundation for your assessment of the mount.
-------------------- What are the Rosary, the Cross or the Crucifix other than tools to help maintain the fortress of our faith in Jesus Christ, the Son of God?