I read an article in one of my magazines about a guy using a .243 and 6mm rifles for deer hunting and he talks about shot placement as being more important than the cal of round. He said with a .243 he was told by a vet to aim behind the sholder, then move forward 4" and aim in the middle of the neck. He said you either miss the deer completely, or you break its neck and it drops instantly. I'll try to find the article so you can reference it. I'm not saying that I necessarily agree with this guy, but htough it was interesting. He also says you need to be able to shoot accurately.

Also, I think its the Outdoor Life magazine this month talks about the different bullets and they use a ballistic buffalo made out of wet paper and plywood to judge expansion, penetration, and weight retention, and accuracy. Excellent article. A must read.