I’ve used CEB BBW#13 - their Safari Solid - on 2 elephants. Multiple feet of straight line penetration through skull bone in one case and through the chest in the other, so a very effective bullet. The one recovered is reloadable, with only the engraved rifling evident, no deformation.
The bullets I used were 0.509”, not 0.375”, but the design and build are identical, so I would anticipate terminal performance to be equal, commensurate with your cartridge. I also use CEBs in 0.423” but have no report yet on performance on game. Hopefully will get to use those on the next safari, if it becomes safe to travel to Zim in 2021.
Barnes Banded Solids are very good and consistent performers ballistically, but I would recommend CEBs without reservation, based on the experience cited.