i have first hand experience with the .270win and .308win SST's. they shoot well, but they are definitely destructive at close range. the longest shot i've taken with this bullet was only 65 yards. with most shots being within half of that distance. it's been my experience that they really fragment at close range. especially when they hit the shoulders. also, i've had experiences where the jacket and core seperated completely. but, i've only had one deer go more than a few feet. so the bullet did its job, it killed deer. you have to remember that balistic tip bullets were designed to expand at long range when the velocity of the bullet has dropped. the copper jacket at the nose of the bullet is thinner than a standard jacketed soft point bullet. which helps them expand reliably at long range lower velocities. in turn, they expand easily and violently at close range high velocities.
this year i've switched to the new Winchester power max bonded ammo for one of my .270's. becuase most of my shots have been at close range i wanted a bullet that has a better chance of staying together. so far i've only had one experience with the bullet. so far so good. hopefully i'll have more good news after this weekend.
if you can, try to avoid shoulder hits at close range if you don't like a lot of blood shot meat. which i'm sure you don't.
good luck.