If I might suggest . Perhaps you have already tried this? Take your best group & re- shoot with the bullet seated .010" deeper. See if that makes any difference. On my various 6.5 ( 6.5x308, 260,6.5x55, 6.5-06 .264mag ) My Barnes bullets are seated so that you can just see the upper part of the upper relief grove. I get small consistent groups. If seating .010 deeper helps maybe a little deeper will shrink groups to better uniformity.. Also if your Bbl is free floated I have found a benefit in beading the first 3" of Bbl. just in front of the action..Stiffens the Bbl. Some thoughts. Wish you the best.
Last edited by Hesp; 02/17/19.
