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AA#1680 has always been very consistent in the past, other loads with different bullets from the same can give SD's of approx 30 with jacketed loads, and 60 with cast loads, probably due to those original chrono'ed were with wheel weight bullets. So I don't think it's the powder, but thanks for trying to help, I do appreciate it! Any other ideas, always open to suggestions. Trying to use the Lee FCD as a light taper crimp die, see what that does.
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