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Old April 8, 2013, 10:06 PM   #15
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Join Date: December 10, 2012
Posts: 3,891
Back in the day, most of the manuals had the test rifle listed. Even though most of them were pressure barrels, they still listed the twist rate and the length. Most of the manuals today tell nothing. I have no Idea if they used an 18" or 28" barrel. Most manuals today do not even tell what primer the data was developed with.
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