Re: 7mm WSM and N550 and 560
Craig , I shoot the VV-550 in my 308's with great results , super accurate and gives realy good velocity.
Their has been so test done that stste that the 500 series powders burn alot hotter and cause barrel wear faster , so that may be a consideration.
I don't have any data for your particular caliber but the entire line of VV powders are great. I think that the 550 would probably be a little fast even for the 120's in the 7WSM but I could be wrong.
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