If you really want to turn your 300 WSM into a hammer, try some Berger 215 hybrids or 230 OTM tacticals with a proper charge of 7828SSC. You should be able to push 230's to around 2700 and the 215s to around 2800 fps. I guarantee you can't push a 165, 180 or 200 grain load fast enough in a 300 WSM to match these heavies for retained energy and wind resistance.
what barrel length are we talking about here? A 230grain bullet in a wsm at 2700fps?