so 1 grn of powder = ABOUT a 4% difference...if you using a 25grn load for ease of calculation.....
also for ease of calculation 3000fps velocity x 4% =120fps
which under 250ish yards wont matter a hoot lol.
and if we keep with the 4% figure for arguements sake..as long as we arent hot rodding our loads up past a 95% till too hot in smallest case.... all is good in the hood.
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