The SST is a nice accurate bullet, but if you keep shooting moose with it, it is going to bring you to grief.
Shot placement is very critical, because that SST will not penetrate much bone.
Trust me, The Partition is a much better bullet on big game like moose.
I cannot speak for the Partition that only made it 8" into the animal, [maybe ½ a load of powder?] but I have shot a couple of moose with the 6mm Remington and partitions, and they gave complete penetration on braodside shots in the ribs.
Moose went less than 20 feet in both cases.
FWIW, I have been hunting moose since 1962, and have shot many of them.
Regards, Eagleye.