I might have some after another 2,000 rds. Just started loading for a RPR in 6CM. Tested from 36.0 to 41.5 of H4350 and Hornady 105 match. Had the best groups at 37.6 with a velocity of 2890 so I figured I’d shoot it there and see how it goes. I’m seating .020 off the lands, so time will tell.Anyone have any hard data (not bubba stories) about slowing down the speed of 6CM to preserve and extend accurate barrel life?
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