All I use on deer is BT, SST(this year) or Boattails. Believe me our deer ain't small many in the 300 range on the hoof. They have worked flawlessly. The reason I use them is: 1) accuracy 2) long distance shots 3) massive energy and damage released (shock or stop power) A Ballistic Tip (BT) and SST are designed to come unglued on impact(to release energy) they have a plastic tip that starts expansion on impact and helps in no deformation in the mag and loading, but supposedly hold retention (which isn't usually the case at high velocity and close range). What they offer is vital shock and trauma with the explosive type expansion, some exits and others stopped at the opposite side hide. They will leave a big blood trail and usually drop the animals with in 100 yards. I have seen large bucks fold on the shot with no exits or exits and yet others run a few yards then drop with both exit or no exit.

Boattails, have some of the same characteristics. Tapered rear portion to allow good flight and accurate. They are suppose to hold together better, but often tip oblong on impact and actually comer unglued quickly (especially high velocity and close range), they have the soft lead point so deformation can occur, changing flight. They basically do the same thing, since they are not flat based, the fly better and flatter, but do expand quicker and more. Shot results are similar to the BT. Some say the Boattail is stronger, however my experience has been they are pretty close to BT's. I prefer the BT's or SST due to accuracy over SP boattails...but that is splitting hairs really.

All types IMO are great Deer bullets. But you must ask yourself, where do I aim? If it is vitals than go for any of the above. If it is front shoulder or wheels, then stick to parts or flat based bullets that hold together better and expand slower. Out of an 06 most of my buds shoot Seirra or Hornady Boattails or BT or SST.(Federal Premium and Hornady Custom Ammo if you shelf buy)