[hornetguy]

I don't know if the construction of the sst's is the same as the interlocks, but that's all I've used in my 6.5 Swede... 140gr interlocks. On 4 or 5 deer, and one small hog, the results have been flawless. No excessive meat destruction, full pass throughs, and all deer except one dropped at the shot. The exception just staggered sideways about 25 or 30 feet and fell through a barbed wire fence, dead.
These are starting out at 2625fps, and none have been over 160yds or so. I don't see any need to try anything else.