Haven't needed to worry about blood trails so far. The deer have fallen where shot, with factory 200gr Core Lokts.
You must have wussy deer. Or you must shoot them in the neck.
We have seen where a 30-06 with 220 grain have taken out the entire lungs and BOTH shoulders. And the buck will shove their entire body 10 or more yards using only their back legs. We have seen deer get shot and totally do a flip shot higher in the shoulder 360 degrees and then run off. These ALL at 100 yards or less. DRT are a rarity and usually have been on does and almost never on bucks. These are all 100% solid hits with excellent bullet placement.
Maybe the definition of DRT means if you find a deer within 30 yards. Then I believe these DRT stories. Drop in their tracks just doesn't happen in my neck of the woods. Same is true for all the hunters in our area except for those who do neck shots.
