I was in the process of writing a long post about bullet construction and speed. Just remember one thing. Shooting a deer or any animal for that matter in the proper vital area won't make a tinkers darn about what bullet construction you choose. If the bullet is properly placed into the heart and lung area it can go through there like shrapnel and still kill a deer with virtually the same results. Speed kills but it also plays hell on certain bullets.

30 years of using Speer boat tails. High BC and perfect thumper with enough retained weight to drive on through out the other side most times depending on yardage.