Never had a bad experience with Barnes TTSX or TSX. I could not get Partitions to shoot particularly well in a couple of rifles so I don’t use them. I’m working on loads for 7x57 with 140 Partitions but the LRX shoots fine.
The 145gn LRX is one of the most accurate bullets I have ever seen in the 7x57. My best load using H 4350 shot as low as .252" and zipped over the Oehler at 2854fps.
There are very few and very expensive animals on the planet where this load would be inadequate.