I have one in .264 win, and its shoots great with 130g & 140g accubonds and 125 partion's 20 thou off the lands, I loaded the same distance off, when I had one in 270 WSM,
270 win, your guess, is as good as mine, but I start 20-30 thou off, ( recommended in the Sierra Manual) and if I don't, get reasonable accuracy, I move that in and then back off, Barnes like a jump, 80-150 thou,
Hornardy and Nosler, I normal find a happy spot, some were between touch and 40 thou, on sporting arms,
I jam my 6PPC into the land's.
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