I had a load a few years back, in a extremely accurate 700p, that used a 168 Berger, and H1000, and Winchester WLR.
That load was a honest to goodness, less then .250 shooter, at 200 yard, in fact , smallest group was .189 @200.
It was also guilty of taking out a few crop damage deer as well.
But I must admit, I had less then perfect results, on the terminal end.
It might have been a off spec batch, or something. Haven't used Bergers since.
Sierra SMK's, can either pencil hole, or open up, no rythym or rhyme.