I Know better, Benchrst. It was confirmed 5 or more years ago that 800x was the most efficient powder for 165gr. & below, and longshot was for 180 & 200. AA9 is very good also, but won't quite measure for full power like longshot. I still have a keg of 800x which gets me 1230-1240 with the 200gr. safely and with good precision. More @Wikipedia
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