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Old March 14, 2012, 06:16 PM   #26
HiBC
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Join Date: November 13, 2006
Posts: 3,822
I do not know if this has been mentioned,but unless you have a manual with a page specific to AR-15 data,you will lose velocity to the gas system.In my experience,it may be as much as 100 fps to the gas port with a direct impingment system.

As close as I have come to your load is a 69 gr match boat tail with between 25 and 25.5 gr Varget.I got 2783 with very good accuracy and velocity variation.
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