9.3x57, I agree and actually have a preference for a bullet that sheds weight, like the Partition.
I like anything that can be done do to increase the volume of the primary wound cavity while still having adequate penetration. Unfortunately wound diameter comes at the cost of penetration and vice versa.

Shedding a bit of weight can be an effect which reduces frontal area and increases penetration, all while still getting a great primary wound diameter. It helps balance out the wound diameter vs penetration issue. Many do not understand this dynamic and thus "default" to perfect looking mushrooms and %100 weight retention.