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Old February 7, 2013, 02:03 PM   #6
Join Date: March 4, 2005
Location: Ohio
Posts: 11,514
5 grains is an old standard for FMJ RN 230's. About 820-830 fps from a 5" tube. 4.5 grains is more common and a little more accurate with cast and swaged RN 230's to help avoid leading or deforming the bullets, but either will work just fine for you.
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