From those pics, I'd guess that bullet blows like an AMAX, though likely not engineered to do so. That SST might make a dandy bullet for the long range hunters, things settle down after say 200-300 yds.
My furthest deer was taken w/6BR 105 amax. Right at 400 yds, double lunged, just seconds earlier I dusted another w/a spine shot, THAT bullet blew in 1-2" as I predicted a disintegration on contact, I steered it into the spine as I was dead on at 200 yds and that first deer was right about that distance. Worked great, 2nd deer had a golf ball sized exit. Doubt it would have gone thru at close range, though death would have been imminent.
I'd use those SSTS but not on rear end shots, or raking shots at close range. I'd just avoid bone if at all possible.
Ironically from what I hear about various 6.5 bullets only the 120 Ballistic Tip has had some reports of being 'soft' vs. other bullets from 120-160 to my knowledge. Be interesting if Hornady 'beefs it up' somehow as I'd not want one coming apart given a choice. Would make an outstanding large varmint bullet i.e. coyote's when hide damage is not an issue.
