I have used the 123gr SST (6.5x55), 130gr SST (.270 WIN), and 150gr SST (30-06). Never shot anything bigger than coyotes with the 123gr SST: pretty massive damage but always killed well. In the .270 and 30-06 with aforementioned bullet weights have shot antelope and whitetails, again never failed to drop em but the meat loss was quite a bit esp if on a quartering shot.
I'm thinking with the heavy bullet weights stated in the first post I would still get quick kills but not as much fragmentation given the high SD and lower velocities. I wouldn't use SST's on anything bigger than deer.
Picked up 2 boxes of 150gr .270 SSTs yesterday to tinker with. If they shoot well I will use em on deer and antelope ..... if the lottery God sees fit to give me tags again ..... lol.
