The purpose of this study was to investigate the effect of different weights of arrow points, shot from different distances, on the precision of the distribution of shooting locations. A custom-made mechanical arm was used, and various weights of points were shot from different distances. The arrow impact position was recorded on the Graph paper by X-Y site coordinates, and calculated the precision of the distribution of shooting locations. The data was analyzed by two-way ANOVA. The author concluded: A. Heavier point is helpful for the precision of 90 meters. B. Male can choose such as: 100-grains, 110-grains, 120-grains point in the competition for its steady precision. C. With different weights of arrow points, the farther the distance is, the worse precision will get.