from my experience, which is pretty limited, i have had pretty good luck with it in my 300win. both deer and elk. its not an elk bullet, at least as far as most folks would think. i am speaking of the SST. it was as advertised in my gun, killed several deer and a several elk, both bulls and cows, over 3-4 years. never had a problem. but i may have been either lucky, or maybe i'm just good. ha, ha. i am pretty sure lucky.
It was very accurate in my rifle. My sons are still using it. I have always reloaded, but when cases became hard to get, i figured i would just buy loaded ammo for a while. I have no complaints from the super-perf SST.