300 WSM powder choices

I know it's not on your list, but mine loves staball 6.5. And I can find it pretty easily these days. Just in case the ones you listed don't work out
 
My stubborn 300WSM shot really good with 180AB with Hybrid100V with good velocity. It shows up as most accurate powder on Nosler load data. Prob FIRST time I ever agreed with their data. Granted not a Berger but the bullet weight may be worth trying.

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