I developed a load for 155gr Berger VLD from my 16" Tikka.
Peterson SRP
CCI BR2
45.6gr Ramshot TAC
2.9" COAL
2700 fps
If you're looking for a bigger speed difference then I'd recommend a 125gr bullet like the Nosler BT or Speer TNT. 48.6gr of 8208 gets me 3000 fps from a 16" barrel. It is...