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Old June 13, 2012, 01:24 PM   #19
Senior Member
Join Date: April 25, 2008
Location: DFW area, Texas
Posts: 393
My 1964 Model 70 loves IMR4831. I get 3/4 inch groups with a Sierra 75 grain HP over 47.5 grains of IMR4831. Seat bullet so it touches the top of the powder column, but does not compress.
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