This is not quite on point, but I'm curious. I'm pretty sure the poster said he was whitetail hunting, but I have seen a lot of responses for moose, etc.

I also shoot a 270 WSM and have been using 150 grain Nosler Ballistic Tips with 100% success (on about 5 deer so far with this gun and none ran beyond 10 yards). It is also accurate at the range. Isn't the Barnes a little much for whitetail (solid brass)? If I knew I was going to hit a deer in the shoulder I would want the Barnes, but on a well placed shot wouldn't the Barnes blow right through the deer with less damage than the BT?

I'm sure there have probably been a million threads about the BTs being fragile, especially for speeds of 270WSM, but I heard they had beefed up the outside of the cartridge, and that is also why I'm shooting 150 grain.
For whitetail, I haven't seen any reason to switch.