Well, with the experience I've had with them, they lost their core about 98% pf the time, Yes they did kill the deer I shot, but they also accounted for a couple lost deer. I've recovered almost all the SST's and was only left with a copper cup. I prefer something that would atleast give me a pass thru shot.
It seems to me that the SSt would fragment on contact...that's just my experience with them, maybe I got a bad Lot#??