They list 168gr loads for the 300WSM, so I'd say light to mid-weight bullet loads should work good.
I personally think they're over-emphasizing the line about the narrow application range. For absolute best performance, maybe, but for good/very good performance, I can't buy the whole narrow application stuff. The powder has no clue what cartridge it's in - it's all about burn rate, volume, pressure, bullet bearing surface, etc.
I bought a couple of lbs yesterday - I will be trying it in my 300 and 7mm WSM's. I'm sure with 130-150's, it'll show good velocity in the 7mm WSM even though it's not listed.
