If you go to 6mmbr.com
they have a 243 Win page. (it is the correct link). There you will find people shooting the 115gr DTAC bullets at 3300fps, but because they do does not mean we all should. I loaded up my bullets with a 41gr load of H100V powder from Hodgdon knowing that they would not achieve peak pressure because I am fireforming the brass about 10%. Still I am amazed at the velocity I am getting from these loads. And in my case the velocity is neither measured nor assumed, but back calculated from the bullet drop from 100 to 285 yards using the correct G7 ballistics coefficient for the Berger Bullets I am using.
The SST's definitely do expand on contact. Some of the "curl" ends up fragmenting at closer range/higher velocities but they put game down fast. I went to the Berger for a better BC since I am not hunting a particularly tough critter.
In the fireformed cases I will be running 105gr target bullets for an even better BC since again I am not too concerned with what it takes to kill a coyote. My main concern is the least wind drift possible since the vitals are a pretty small area.