Alliant has changed the formulation of Unique in the last 15-20 years IIRC, so current data may not be safe with older powder - in this case I believe the data for the current formula is lower than what it used to be but it's best to double check . I have a Lyman #46 manual from 1983 at home, and I would be glad to tell you what it says later this evening if you don't get an answer before that.
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