I don't have a clue why Alliant issued the Blue Dot warning and frankly I do not care! If the guys who make the stuff say it is unsafe to use in such and such a combination, that is good enough for me. Frankly I never found Blue Dot particularly useful in any handgun cartridge I tried it in. Unusual pressure spikes were fairly common, and it never seemed to accomplish anything that another powder didn't do better.
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