tollarja Posted May 25, 2018 Share Posted May 25, 2018 Be careful of heavy bullets in short barrels because they may not have enough velocity to stabilize. My 18" shot 75 Hornady terribly. Turns out they were marginally stabilized at 2500ft/s with 1:7.8 twist. Try the Berger twist rate calculator, remember 16" is short so you'll lose a lot of velocity from book load data. My rifle also hates Hornady 68's so it could be Hornady. It absolutely loves 69gr SMK's, which sucks because those are expensive. Link to comment Share on other sites More sharing options...
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