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Old 01-16-2013, 22:24   #7
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Join Date: Jan 2009
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Originally Posted by Taterhead View Post
I picked up a Hornady #9 recently. Earlier editions published data for 10mm Auto for 155 grain an Accurate no. 7. The older max was 15.1 grains. I was always suspicious of that load in light of maxes listed by Accurate and Speer.

The current data is only 12.7 grains. The old data is 16% higher than current print. This is additional evidence to never rely on any single data point for loads.

On a side note, I picked up the most recent Loadbooks. There are a lot of changes there too. The Hornady data above has not yet been corrected.

Noteably, the infamous IMR 800-X with 135 Nosler load is gone.
I'll occassionally pull a load out of an Hornady manual whcih won't even cycle the slide on any of my automatics. To say that they are usually conservative, is an understatement.
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