Going off memory but the slower the twist wont stabalize the longer heavier rounds and they wont stabilize in air but the fast twist is to fast for the faster moveing lighter rounds and it over spins them and causes the eradiac spreads. Now this is all hear say but it makes since in my pea brain lol.
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Naw, ur right. But the 1:7 is slower aint it? I just contradicted myself too in 2 different replys. Dang sleep deprivation. If the 1:7 is faster iv got my rates backwards. Iv nvr ran into this issue with these lighter rounds being so unstable. In the army, i didnt care, i wasnt directly paying for the ammo and nvr qualed below 36 outa 40, but buying the ammo now, i wanna get the best round for my $. It also may have to do with this ar being newly built and tight fitting. Iv only ran bout 300rds through it so it might not broke in yet