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Primer testing W/ 90 gr. Sierra in a 223

Jeff,
Years ago had the good fortune to have John Whidden provide a two day, 1K shooting school for me and two shooting buddies. He gave us his ”Wind Genius” math for 1K shooting. The 308 uses 1 moa for each 1 mph @ 3 o’clock. A 6 mm is 60 % of that. If wind is from 1-7 or 11-4, take another 60% off again.
It will put u on the target and u can adjust from there.
 

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