Never have tried the Berger’s, but have used just about every other bullet with lead in it that I can think of. I’ve heard too many stories of their explosive performance, and I’m not an extreme long range shooter that may need a bullet to open at very low velocities.
Decided to try a Barnes TTSX 168gr in my 300 WSM a couple years ago - so far have killed 2 elk and 2 deer with shots ranging from 75 - 300 yds, with varying shot angles and the amount of bone hit. These 4 animals are a pretty small test sample, but so far, so good. They all died just as quick as anything else I’ve seen, with a fraction of the meat damage.
There is plenty of info online that shows just how far a tiny lead fragment can travel through tissue upon impact on these game animals. I also butcher my own and have found lead a few times well beyond the main bloodshot area. How many times did I miss finding these small fragments?