My lee pro auto-disk measures about .2gn lighter with this batch of true blue than the book says it should, but I still want to start with the same size aperture that is recommended in my book(.37cc). The next size up I estimate will weigh 5.6gn. It may be overly cautious, I doubt I would have any issues starting at 5.6 but I am still fairly new at this and will still enjoy shooting off 10 light loads in the process.
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