I had heard early 130 .277 BTs were soft, later beefed up, wonder if the 120/6.5mm BT went thru an 'upgrade' also? Much depends on launch speed/range = impact speed w/any bullet so that could be the variable among many reports, as well as what it runs into.

I'd give the BTs a try myself if I did not my 130 ABs. IIRC they once were a fav in the 6.5 JDJ (225 Win case) by handgun hunters. It's been a very successful deer bullet by many, while a few said it did not hold up so well. Not sure why.