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Old 08-17-2009, 6:24 PM
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ar15barrels ar15barrels is offline
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Quote:
Originally Posted by ETD1010 View Post
Has anyone tried using WIN 748 for the 77 grainers? I keep seeing computer generated results that shows them at the top of the velocity scale with 25 grains worth.
748 is too temp sensetive for serious accuracy use.
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