I used a 150 grain '06 SST Superperformance @ about 3100 MV on 3 caribou and a moose, at ranges of about 300, 200, 70, and 30 yards respectively, on Nov 1 and 2, this year.
Performance was about what I expected. Quick expansion, large exit wounds.
The only bullet recovered was on the bull moose, shot an inch under his right ear... pics posted this forum under "SST Performance" or some such.
SSTs, especially in Hornady Superperformance ammo are IMO are best used at 300 yards plus, which is what I chose them for. Or if you want severe damage and a large exit wound on body shots. I have no prob with that. Have never used a BT on game.
In my 27" heavy bbl rifle, I get better groups and less wound damage with Remington factory Corelokts, than with the Hornadys - but not significantly better groups, and the Hornady's have a better 300 plus yards trajectory. I can spare an inch or so group size at 300 and out for a flatter trajectory.
I haven't seen any difference on bang-flops between the two, having all been bang flops in the last 5 years, 2 moose under 100 yards, and about 12 caribou all but one over 200 yards here out of Kotzebue.
Inside 300 yards, for my rifles, I favor the factory Corelokts at this time. (Is that enuf weaseling for you ??
) No dis with Hornady Interlocks over the years either.
It really ain't what you hit em with, within reason, but where..... Any well constructed for the purpose plain jane or premium will do the job. I tend to go with accuracy first, and if there, have largely gone back to plain janes rather than expensive premiums. I reserve the right.......etc....