Bang-flops are impressive, but they don't happen as often as you might think. As said, the best ways to get a bang-flop is a shot through the shoulder blade (high shoulder), a neck/spine shot destroying the spinal column, or a headshot. The head/neck shots aren't a great idea because they are fairly small targets to hit, and relative to the body of the animal, they move quite a lot more (the head and neck move even when the deer is standing in one place). The downside of the high shoulder shot is that it passes through a large muscle/bone mass, causing substantial destruction of edible meat.
I would say that you'd be best advised to stick with a conventional cup/core soft point like the one you're using in 150 or 165 grains. These will rapidly expand and lose considerable weight (fragmentation). This will generally result in a better chance of DRT (Dead Right There) performance or at least shorter tracking. Just remember, shot placement is the most important thing. Any expanding bullet from a .30-06 will kill a deer effectively when the vitals are hit.
Mike