I hope that you or someone else can answer my question?
From reading the article you were using a fast twist barrel with big bullets,
my question is, I have built a sweet AR 223 with a 24" Heavy triangle 9 twist
barrel, from my reading you can't shoot the big bullets in a 1-9 twist barrel,
this barrel is AWESOME and shoots great, I have plans on shooting long range with it not a mile! What bullet would I use to try and shoot 1000yards with my slow twist barrel?