Your right. I was referring to shot placement, and not actual results. I think a broadside, behind the shoulder, trying for double lung is a risky shot. Particularly for US hunters as most of us grew up hunting whitetail deer and the lungs are further back in the chest. Plus, too often that animal is slightly quartering towards you and you just can't tell. In that scenario, I'd prefer a bullet that expands quicker and even one that breaks apart some. Like and Nosler Partition.The discussion is triggered by the post from @trperk1 in response to the question of @Firebird. We may have used the word poor or marginal shot a little unfortunately for the double lung shot. But since it's mainly about the working of bullets, especially the TSX from Barnes, I can from personal experience understand what was meant by bullets that expand quickly and especially in the case of the double lung shot, cause the greatest damage as possible. For this reason it is understandable that some have concerns that TSX bullets do not always deliver that. A PH once showed me a 400gr TSX bullet caliber 416 that did not expand in a buffalo with a lung shot.
We exclude gut shots. Even the biggest and fastest bullet does not help here.
For all the guys posting pics of the perfectly mushroomed Barnes, I have those too. And with near 100% weight retention. That's not the point though. My experience on my last safari was the Barnes bullets blew through smaller animals, with pretty much zero blood from the exit or entrance hole. Given the exit hole was the same diameter of the entrance hole, I don't think they expanded much if at all. For me I stick with them for larger animals but use something else for smaller ones.