Yes, sorry to be party to the hijack, but it was an eye-opener for me as well tp learn the highest BC bulelts wasn't always the best choice. Highpoer shooters are happy to shoot 22 cal, 80 grain .420ish BC SMKs at 600 yds, and I have watched them shoot 6-10" groups with that combo--using iron sights.

Which brings to the next counter-intuitive concept. If I was shooting at 600 yds, even in the wind, I'd use 187 Bibs in a 300 WSM, or probably 129 grainers in a 6.5. At 600 yds, the wind doesn't have as much effect as it does at 1000, so you can use lower BC bullet with a slower twist and wind up with betetr scores. When you carry this idea through, you find the little BR guys shooting 58-68 grain bullets at 3300-3500 fps from 1x13 twist barrels. That is what it takes to shoot those sub 1/10th moa groups needed to win at little BR.