I use Blue Dot in a bolt action 308 Win. that has a 22" 1:12 twist barrel, with a Nosler 125gr BT and Federal 210 primer and 16gr of BD is about a 50% case fill.
I have shot hundreds of these with no issues, the accuracy is excellent at 200yds it hold a 5 rnds under a 1.5" major elevation and some windage adjustments are need. I keep track of changes so finding zero for a standard load is not that difficult.
Reduced loads are fun to shoot, but the trajectory is far from flat.
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