My family and I have shot many deer with the Barnes TMZ/TEZ bullets. I have only recovered 4. All classic mushrooms. These 4 were shot slow to fast (MV 1500 to 2700fps), close range to long-range (30yds to 304yds). These are not arranged in any order. I have never experienced no expansion. I have seen great blood trails, very sparse blood trails, and two no blood trails, but it was all shot placement.
Most likely, you will never have to worry about finding a stray petal in your steak from one of these bullets
compared to a CF bullet.