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Old November 30, 2012, 11:36 AM   #10
Senior Member
Join Date: January 4, 2012
Location: Northern Missouri
Posts: 428
Magnum primers have worked better for me. I had erratic ignition with H414 and standard primers. It shows up as vertical stringing of your group. It measures extremely well, and 52.0 grains gives me a bit over 2600 fps with a Sierra 168 HPBT (24" bbl), which load I use for target shooting.
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