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Old 07-26-2009, 9:03 AM
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L8Apex619 L8Apex619 is offline
Join Date: Apr 2009
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IIRC, the data published by Sierra was based on a 26" barrel (for .308). That should equate to a loss of just under 150 FPS out of a 20" barrel:

Using their load data, it looks like it would take an extra 2.4 grains of BLC-2 to make up that difference... which should put you right around 47.6 grains - almost a full grain under Sierra's published max load. How much BLC2 are you loading?

ETA: How far (from your rifle) is your chrono?

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Last edited by L8Apex619; 07-26-2009 at 9:38 AM..
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