Forum: 300 Whisper Rifles and Pistols
09-10-2011, 01:32 AM
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Replies: 12
Views: 3,348
I have a M1S upper with carbine gas. As...
I have a M1S upper with carbine gas. As mentioned above, I have to use AA-1680 to get the subsonics to cycle. But once I switched to 1680 I was able to work up a load for subsonics that uses the...
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