I have several sets I hunt on my property. If I am in a stand back in the hardwoods I always use my 30-30. It is a great 100 yard and in round. Yes, you can definitely effectively reach farther but, I have other options for that. The 30-30 gives great penetration and expands effectively. Overall, the 30-30 is a classic whitetail round and will always be considered an adequate choice for big game.
http://www.chuckhawks.com/30-30_dont_give_up.htm