I am not too sure how well the Blue Dot powder will work for you, but it is sure worth a try since you have some in hand. Blue Dot really shines when you load it up near or at max loadings. It is a magnum powder and likes to be loaded hot. I use Blue Dot in 357 Sig brass, and it produces superb velocity and accuracy. The only down side(to some at least) is the flash/bang that it produces. It is quite impressive!!!
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