Mate I have only run 2209 through my 308NM,it shoots,got a 26" barrel and maybe that helps.I have only shot hydros through this one.
My old 308NM ate whatever was fed into her.

But I take that on board about the slower burn.I don`t fuss too much looking for BR accuracy for what I do here in the field.

But the 300 H+H has a pretty good name for accuracy apparently.