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    300 AAC blackout sub sonic loads

    Plenty of good info on the 300BlkTalk page but I will throw up some info on what I loaded. All shot out of an AR with 8" barrel no idea on gas port size. It was a windy day and which is why I think there were some strange fluctuations in the velocity groupings. .300 Whisper brass Rem 7.5 primers...
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