A old friend of mine and 30yr+ reloader swears by the older books. In todays litigous society, manufactureres put huge safety margins into their data so if you make a mistake you will probably be OK. In the older books of the 60's, they gave loads to the max, and if you f'd up, your problem. Sounds resonable to me. I have some older books, but stick to the newer books. (Speer #13) I also check powder makers websites if possible.
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