I would say 100% of the time, but that's not necessarily the optimum performance for killing light skinned game like deer. I like some fragmentation, it creates a larger wound channel IMHO. I don't need a bullet to penetrate the deer and three trees behind it. Folks on here like to talk about how much energy you need to kill a deer, although I don't necessarily agree with that sentiment, but a bullet that zips through a deer with higher retained velocity also has taken that energy with it instead of transferring it to the deer.

If the game is thick skinned, heavy boned and can fight back, I would definitely consider a Barnes. I just see no need for one on a little Alabama whitetail.