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Old February 6, 2013, 05:22 PM   #16
Join Date: March 4, 2005
Location: Ohio
Posts: 13,643
Actually, I would check that old data against current data. I have the Hornady 2nd Edition data, and it was developed in production guns by pressure sign rather than in pressure test barrels. Some of it's a bit warm as a result. If the modern data has smaller charge weights, start with that.
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