I think you will get a better chance of DRT on a deer sized animal if you use relatively light rapidly expanding bullets. In .30 caliber I used to hunt pronghorns with 150 grain GameKings and they worked fine. One DRT but that was CNS.
But there's also much to be said about leaving an exit hole, not because it leaves a better blood trail but because it lets air into the lung cavity faster, causing quicker lung collapse, and the animal won't run as far.
To get the best of both worlds, I now use Nosler Partitions.
