When my son was in high school, he did a science project to show that the ballistic coefficient of a bullet changed its flight path. He loaded identical 30-06 cases with the same primer, powder, and different 150 grain bullets. He expected the 150 flat point 30-30 bullets to drop faster, but at 100 yds they were higher than other bullets and shot the tightest grouping of all. We concluded that since the bullets were more conical and had more surface area in the riflings, they must have exited at a higher velocity. At greater distances, they shed their velocitiy as expected.
We were very amazed at the tight grouping the 150 grain flat point bullets produced. It was not a one group fluke, as he repeated the test several times. Those were some good shooting bullets. Never used any on game however.