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Sorry, I have used, AA5744, AA1680, Hodgdon H110 and W296, the best one for my rifle for a supersonic load is the W296, for sub, I am working up a load using AA5744. Looking at the Hornady reloading book, the chart for burn rates from fastest to slowest, AA#9 is at #47, while W296 is at #50. YMMV
I think the best place to ask this question is at the 300blktalk.com forum
I know it's not the answer you're looking for but this should lead you in the right direction.
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