Thanks, that is good information to have. Whenever I see published load data there is one part they always seem to leave out, the shot to shot variation in pressure and velocity. When I chronograph supposedly low pressure loads I tend to see higher than I would like variations in velocity. My experience (admittedly not great) is that today's powders have an optimal operating point and if you drop below that point you start to get greater variation. I have not played with any black powder.
C.G.B.
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