The higher BC is another reason I like the 300's over the lighter bullets.

No, my son has not done his experiment yet, The science fair isn't until around March but he is wanting to get a head start on it due to the amount of shots he needs to complete it. I'm hoping to get him started after our elk hunt in a few weeks if work and weather permit. It looks like he is going to go with 3 lead bullets of different sizes and shoot one distance with at least 3 powder levels.