I have a 9.5 twist and it wont shoot 162's at all. 160Tmk's and 168 berger classics are good. some of the 150gn bullets shoot ok except the longer lrab's. What powder/cases etc are you using for the 180's? thats great accuracy you're getting and velocity. I have chrome molly barrels and they both foul fast with the hornady projectiles but from what I can gather no one seems to be having that problem with stainless. Note in the same barrels nosler/berger/sierra and even barnes don't foul. Guessing hornady are using a softer jacket in their bullets. Do have some 180's but haven't tried them because of the results with the 162's etc.
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