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Old 02-07-2020, 07:18 PM
hoytx10 hoytx10 is online now
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Default Best Powder for 10MM

Hello all. I am looking to start reloading 10MM with 180 or 200 grain Hornady XTP's. What is the best powder for the greatest velocity? Any other suggestions for reloading 10MM in general? Thank you!
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Old 02-07-2020, 07:44 PM
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Accurate Arms Number 7 immediately springs to my mind.
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Old 02-07-2020, 07:47 PM
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Longshot , VVN-105 , 800X , Silhouette & Autocomp will give highest velocities . 800X is a PITA as it does not meter you have to weigh every charge . The others meter just fine . Acc #9 , Blue Dot & 2400 will also produce good velocities .
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Old 02-07-2020, 07:52 PM
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I settled on Blue Dot, and get 1245 fps with a 180 JHP. Could probably go hotter, but I have no reason for more.
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Old 02-07-2020, 08:11 PM
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For max vel with 180gr, BlueDot & Longshot & maybe AA#7. For 200gr, BlueDot still does well but AA#9 is very accurate in my various 10mm with top vel & seemingly less pressures.
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Old 02-08-2020, 05:28 AM
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Old 02-08-2020, 07:27 AM
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Thank you all for your help, it is greatly appreciated!
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Old 02-08-2020, 10:49 PM
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I love 800X but it does not meter very well. Longshot is my next choice.
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Old 02-08-2020, 11:35 PM
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AA#9 is THE powder for full power 10mm loads. I use it.

AA#5 works well for FBI light loads.
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Old 02-09-2020, 12:21 AM
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Accurate #9 is what I use also
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Old 02-09-2020, 04:03 AM
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Anything but blue dirt (blue dot). AA#9 is my vote.
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Old 02-09-2020, 08:38 PM
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Longshot, Blue Dot, and VV N-105
in that order for velocity

Longshot, and VV N-105
for better metering
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Old 02-09-2020, 08:40 PM
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HS-6 with CCI350s between 7.0 and 8.0 gr. depending on bullet weight. Nothing beats that when accuracy is concerned from my P220.

I look at my targets and it is between 7.0 and 7.25 gr HS-6 and 180 - 200 gr bullets.

Last edited by oysterer; 02-09-2020 at 11:04 PM.
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