Thread: 9mm powder
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Old 03-08-2017, 05:26 PM
DIYguy DIYguy is offline
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Join Date: Dec 2015
Location: Twin Cities, MN
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Have multiple bottles of different powders I picked up when first stocking up on reloading equipment. After reading the reviews in the latest Hornady book and how highly they recommended Power Pistol for 9mm that's what I went with.
I've created some spread sheets for my reloading recipes, Chrono reports and even COL test with different bullets in my pistol barrels.
One thing I've found is Berry's RN 115gr, COL 1.13, PP @ 5.9gr, M&P 4.25 barrel gives me an average 1172 FPS. 134.8 Power Factor @ 37 degrees (Winter in MN) and single hole 1.25" at 10 yards with bench rest. (30 rounds) Std Div of 18.
Because I'm shooting USPSA I've been shifting to heavier bullets and softer recoil.
I've found Berry's 147gr FP, COL 1.08, PP @ 4.3gr, M&P 5" barrel gives me an average 915 FPS, Power Factor 134.6 @ 38 degrees and grouping about 2.5" at 10 yards from bench rest. I'm not as happy with the groupings I'm getting but the recoils is definitely softer. The flat point makes a nicer hole in the cardboard. I found that anything less than 4.2gr behind the 147gr bullet started to spread the groupings and were not as accurate. 4.4 and 4.5gr didn't improve the group size just the PF
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