The point of impact of every bullet will be different. You have to try to know for sure. With the same powder charge, the laws of physics say that a heavier bullet will travel slower and therefore impact lower.
The 200 grain DC are fine, especially at 100 yards. If you look at the kinetic energy levels, DC bullets hit with more energy at 300 yards than most other bullets at 100 yards! Their construction of soft lead with no copper jacket means they will also open up easier than other bullets and therefore put more energy in the deer than you would normally expect.
I hunt with the 195 grain DC. I shot two deer last year at 160-170 yards with the bullet, and both were down within 40 yards. I shot another frontal at 70 yards, and the bullet didn't stop until it went back through the liver; it opened to the size of a nickel. The impact flipped the deer over backwards and it was gone before it hit the ground. Truly impressive; made me a believer.