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Just shot mine today...when I wasn't shooting I was standing 1-2 yards away; it seemed much quieter than when I was pulling the trigger.
Do you have the ability to turn your gas off? I turned my gas block to the OFF position for effect to show the other guys just how quiet it can be.
My load (for a 16" barrel) is: 11.5grains of IMR 4198, Sierra 190gr HPBT MK, seated to 2.235" OAL. The Temperature today was 35 degrees and this gave me 985fps. Speed of sound here today should be roughly 1090 fps. At 12.0 grains of 4198, some of the loads were going supersonic.
Last edited by HotLead; 02-21-2011 at 04:24 PM.
Reason: grammar!
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